Fukami-Kanai Laboratory, Research Institute of Electrical Communication, Tohoku University

News

2024/04/22
Our paper "Room-temperature flexible manipulation of the quantum-metric structure in a topological chiral antiferromagnet" by J. Han, T. Uchimura, Y. Araki, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, J. Ieda, H. Ohno & S. Fukami in  Nature Physics.
2024/04/22

Our paper "Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructures" by  M. Gołębiewski, R. Hertel, M. d’Aquino, V. Vasyuchka, M. Weiler, P. Pirro, M. Krawczyk, S. Fukami, H. Ohno, and J. Llandro was published in ACS Applied Materials and Interfaces.

2024/03/27
Our paper "CMOS plus stochastic nanomagnets enabling heterogeneous computers for probabilistic inference and learning" by N. S. Singh, K. Kobayashi, Q. Cao, K. Selcuk, T. Hu, S. Niazi, N. A. Aadit, S. Kanai, H. Ohno, S. Fukami, and K. Y. Camsari was published in Nature Communications.
2024/03/25

Yoon Juyoung-san (PD) has received the Graduate School of Engineering Award. Congratulations!

2024/03/15

Prof.Hideo Ohno's final lecture and retirement party were held. For more information, click on the "Events" page.

2024/03/07

Our paper "Wurtzite vs. rock-salt MnSe epitaxy: electronic and altermagnetic properties" by M. J. Grzybowski, C. Autieri, J. Domagala, C. Krasucki, A. Kaleta, S. Kret, K. Gas, M. Sawicki, R. Bożek, J. Suffczyński, and W. Pacuski was published in Nanoscale.

2024/02/26

Our paper "Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets" by M. Bhukta, T. Dohi, V. K. Bharadwaj, R. Zarzuela, M.-A. Syskaki, M. Foerster, M. A. Niño, J. Sinova, R. Frömter, and M. Kläui was published in Nature Communications.
Press release (external cite): Merons realized in synthetic antiferromagnets

2024/02/23

Our paper "Magneto-ionic modulation of the interlayer exchange interaction in synthetic antiferromagnets" by M.-A. Syskaki, T. Dohi, B. Bednarz, S. O. Filnov, S. A. Kasatikov, M. Bhukta, A. Smekhova, R. Pachat, J. W. van der Jagt, S. Ono, D. Ravelosona, J. Langer, M. Kläui, L. H. Diez, and G. Jakob was published in Applied Physics Letters.

2024/01/22

Associate Professor Kanai's RESEARCH HIGHLIGHT has been posted on the website of Advanced Institute for Materials Research (AIMR), Tohoku University.

2024/01/04

Our paper "Single-nanometer CoFeB/MgO magnetic tunnel junctions with high-retention and high-speed capabilities" by J. Igarashi, B. Jinnai, K. Watanabe, T. Shinoda, T. Funatsu, H. Sato, S. Fukami, and H. Ohno was published in npj Spintronics.

Press release: "Tailoring to Various Applications with Single-nanometer Magnetic Tunnel Junction Technology"

2023/12/21

Our paper "Pitch Scaling Prospect of Ultra-Small Magnetic Tunnel Junctions for High-Density STT-MRAM: Effects of Magnetostatic Interference from Neighboring Bits" by T. Shinoda, J. Igarashi, B. Jinnai, S. Fukami, H Ohno was published in IEEE Electron Device Letters.

2023/12/13

Our collaborative research with UC Santa Barbara "Hardware Demonstration of Feedforward Stochastic Neural Networks with Fast MTJ-based pbits" by N. S. Singh, S. Niazi, S. Chowdhury, K. Selcuk, H. Kaneko, K. Kobayashi, S. Kanai, H. Ohno, S. Fukami, K. Camsari was presented in the 69th Annual IEEE International Electron Devices Meeting (IEDM 2023) on December 12th in San Francisco.

Press release: "Researchers Develop Spintronic Probabilistic Computers Compatible with Current AI"

2023/12/01
61 oral presentations and 91 poster presentations were given and the number of total participants were 292.
Group photo taking after the plenary session of the spintronics on November 30.
2023/11/28

Prof. Ohno (President of Tohoku University) received an honorary doctorate from the University of Warsaw. The ceremony took place on 13th November in Warsaw, where Prof. Fukami also attended.

 [Ref.] News from the University of Warsaw

2023/11/21

Our paper "Directed Self-Assembly of Diamond Networks in Triblock Terpolymer Films on Patterned Substrates" by D. Abdelrahman, R. Iseli, M. Musya, B. Jinnai, S. Fukami, T. Yuasa, H. Sai, U. B. Wiesner, M. Saba, B. D. Wilts, U. Steiner, J. Llandro, and I. Gunkel was published in ACS Applied Materials and Interfaces.

2023/10/31

Our paper "Spintronic devices for high-density memory and neuromorphic computing – A review" by B. Chen, M. Zeng, K. H. Khoo, D. Das, X. Fong, S. Fukami, S. Li, W. Zhao, S. S.P. Parkin, S.N. Piramanayagam, S. T. Lim was published in Materials Today.

2023/10/30

Our members, Assoc. Prof. Kanai, Assist. Prof. Han, Mr. Uchimura (D2), Mr. Chiba (D1), Mr. Ota (M2), Mr. Shinoda (M2), Mr. Wakabayashi (M2), and Ms. Kaneko (M1), attended the 68th Annual Conference on Magnetism and Magnetic Materials (MMM 2023) held in Dallas, TX, USA on Oct. 30th - Nov. 3rd, and gave presentations.

2023/09/11
Our paper "Enhanced thermally-activated skyrmion diffusion with tunable effective gyrotropic force" by T. Dohi, M. Weißenhofer, N. Kerber, F. Kammerbauer, Y. Ge, K. Raab, J. Zázvorka, M.-A. Syskaki, A. Shahee, M. Ruhwedel, T. Böttcher, P. Pirro, G. Jakob, U. Nowak & M. Kläui was published in Nature Communications.
2023/08/04
Our paper "Handedness anomaly in a non-collinear antiferromagnet under spin–orbit torque" by Ju-Young Yoon, Pengxiang Zhang, Chung-Tao Chou, Yutaro Takeuchi, Tomohiro Uchimura, Justin T. Hou, Jiahao Han*, Shun Kanai, Hideo Ohno,Shunsuke Fukami, and Luqiao Liu was published in Nature Materials.
2023/07/17

Our paper "Magnetic order in nanoscale gyroid networks" by Ami S. Koshikawa, Justin Llandro, Masayuki Ohzeki, Shunsuke Fukami, Hideo Ohno, and Naëmi Leo was published in Physical Review B.

2023/05/22

Kick-off meeting for the Johan Åkerman's lab was held, in which researchers/students from the University of Gothenburg (Sweden) and the members of RIEC, Tohoku University attended.

2023/05/20

As a satellite event of the Intermag 2023, held in Sendai from May 15th to 19th, a lab tour was held. Prof. Fukami gave a tour for about 90 participants.

2023/05/08
This will be a fully onsite workshop at Laboratory for Nanoelectronics and Spintronics, RIEC, Tohoku University. Anyone is welcome to join free of charge with no need of registration.
2023/04/06

The online session of the 2nd Online RIEC International Workshop on Spintronics - Computing with Spintronics was held. We had 322 registrants from 35 countries/regions (as of April 11). We are grateful to all the panelists, invited speakers, and registrants who actively joined the discussion.
You can watch the recorded video of the live session and invited talks on the on-demand site at least until the end of May 2023. Anyone who registered can access the on-demand page.

2023/03/31

Justin san (Assistant Professor), Kanno kun (MC), Kishi kun (MC), Kobayashi kun (MC) graduated. We hope for your success in your new place!

2023/03/30

Prof. Fukami gave a seminar entitled "Probabilistic Spintronics - Computing and Device Physics" at the On-line SPICE-SPIN+X Seminar held on March 29, 2023. The video of the seminar is posted on YouTube.

2023/03/24

Kanno kun, Kishi kun, Kobayashi kun, and Chiba kun received the Master Degree. Congratulations!

2023/03/24

Keito Kobayashi (M2) is awarded the President's Prize. Congratulations!

2023/03/21
Our paper "Thermal stability of non-collinear antiferromagnetic Mn3Sn nanodot" by Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, S. Kanai, J. Ieda, H. Ohno, and S. Fukami was published in Applied Physics Letters.
This paper is selected as a Featured Articles. 
2023/03/20
Our review paper "Coherent antiferromagnetic spintronics" by J. Han, R. Cheng, L. Liu, H. Ohno and S. Fukami was published in Nature Materials.
2023/03/15
The 2nd Online RIEC International Workshop on Spintronics - Computing with Spintronics will be held.
The workshop is free of charge, but registration is necessary from the website above. Registered participants can access the on-demand talks and the live session to be held on April 6th, 2023, 17:30-19:00 (JST), 10:30-12:00 (CEST). The on-demand talks will be released from late March.
2023/03/14

Our review paper on probabilistic computing "A full-stack view of probabilistic computing with p-bits: devices, architectures and algorithms" by S. Chowdhury, A. Grimaldi, N. A. Aadit, S. Niazi, M. Mohseni, S. Kanai, H. Ohno, S. Fukami, L. Theogarajan, G. Finocchio, S. Datta and K. Y. Camsari was published in the IEEE Journal on Exploratory Solid-State Computational Devices and Circuits.

2023/03/09
A research article "Optically induced ultrafast magnetization switching in ferromagnetic spin valves" by Dr. Junta Igarashi (an alumnus of Tohoku University and JSPS Overseas Research Fellowship) and Prof. Stephane Mangin (Professor at the University of Lorraine, Visiting Professor of the CSIS, Tohoku University) was published in Nature Materials. Congrats, Junta san!!
2023/02/22

We hold a meeting of the graduation research presentations given by 4 students from Ikeda lab, Otsuka lab, and Fukami lab.

2023/02/01
J.-Y. Yoon (D3) and Y. Takeuchi (Assistant Professor) was awarded the JSAP Young Scientist Award for their paper "Crystal orientation and anomalous Hall effect of sputter-deposited non-collinear antiferromagnetic Mn3Sn thin films" [Appl. Phys. Express 13, 013001 (2020)]. The ceremony and Young Scientist Award Speech will be held in the 70th JSAP Spring Meeting 2023. Congratulations!
2023/01/01
Professor Johan Åkerman, a professor of the University of Gothenburg in Sweden, has been appointed to a post at the Research Institute of Electrical Communication (RIEC) of Tohoku University through a Cross Appointment System, and has been named the "Professor, University Research Lead".
He is going to head up a new laboratory "Innovative Spintronic Device Laboratory" and Professor Shunsuke Fukami will support the startup of the lab.
The announcement from Tohoku University is here.
2022/12/07

Our collaborative research with UC Santa Barbara and University of Messina entitled "Experimental evaluation of simulated quantum annealing with MTJ-augmented p-bits" by A. Grimaldi, K. Selcuk, N. A. Aadit, K. Kobayashi, Q. Cao, S. Chowdhury, G. Finocchio, S. Kanai, H. Ohno, S. Fukami and K. Y. Camsari was presented in the 68th Annual IEEE International Electron Devices Meeting (IEDM2022) on December 6th in San Francisco.

Press release: "Researchers Develop a Scaled-up Spintronic Probabilistic Computer" 

2022/11/29

Our paper "External-Field-Robust Stochastic Magnetic Tunnel Junctions Using a Free Layer with Synthetic Antiferromagnetic Coupling" by K. Kobayashi, K. Hayakawa, J. Igarashi, W. A. Borders, S. Kanai, H. Ohno and S. Fukami was published in Physical Review Applied.

2022/10/05

An interview to Prof. Tetsuo Endoh of the CIES and Prof. Fukami was published online in an article titled "Spintronics enters the mainstream" as a part of "Focal Point on Nanotechnology in Japan" in Nature. PDF version of the printed article can be downloaded here.

2022/08/29

Our paper "Large Exotic Spin Torques in Antiferromagnetic Iron Rhodium" by J. Gibbons, T. Dohi, V. P. Amin, F. Xue, H. Ren, J.-W. Xu, H. Arava, S. Shim, H. Saglam, Y. Liu, J. E. Pearson, N. Mason, A. K. Petford-Long, P. M. Haney, M. D. Stiles, E. E. Fullerton, A. D. Kent, S. Fukami, and A. Hoffmann was published in Physical Review Applied.

2022/08/25

Professor Fukami was awarded the 2022 Achievement Award of the Magnetic Society of Japan for his achievement of "Development of new-functional spintronics devices and its application to unconventional computing". Congratulations!

2022/08/12

Our paper "Anisotropic magnetotransport in the layered antiferromagnet TaFe1.25Te3" by R. Roy Chowdhury, S. DuttaGupta, C. Patra, A. Kataria, S. Fukami, and R. P. Singh was published in Physical Review Materials.

2022/08/08

Dr. Samik DuttaGupta (received Ph.D. in 2016) resigned from the Assistant Professor of CSIS and left for India to be assigned to an Associate Professor of  Saha Institute of Nuclear Physics. We wish you great success!

2022/07/14

Our paper "Local bifurcation with spin-transfer torque in superparamagnetic tunnel junctions" by Takuya Funatsu, Shun Kanai, Jun’ichi Ieda, Shunsuke Fukami, and Hideo Ohno was published in Nature Communications.

Press release: "From Bits to p-bits: One Step Closer to Probabilistic Computing"

2022/06/27

T. Uchimura (M2) was awarded the Best English Presentation Award in the JSAP Spring Meeting. The title of the presentation was "Observation of non-collinear antiferromagnetic domain structure in epitaxial Mn3Sn thin films". Congratulations!

2022/05/23
Our paper "Large Antisymmetric Interlayer Exchange Coupling Enabling Perpendicular Magnetization Switching by an In-Plane Magnetic Field" by H. Masuda, T. Seki, Y. Yamane, R. Modak, K. Uchida, J. Ieda, Y.-C. Lau, S. Fukami, and K. Takanashi was published in Physical Review Applied.
2022/05/20
Professor Ohno, the current president of Tohoku University, has been granted the title of Doctor Honoris Causa from the University of Lorraine. The ceremony video is available.
2022/04/27
Our paper "Observation of domain structure in non-collinear antiferromagnetic Mn3Sn thin films by magneto-optical Kerr effect" by T. Uchimura, J. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, R. Takechi, K. Kishi, Y. Yamane, S. DuttaGupta, J. Ieda, H. Ohno, and S. Fukami has been published in Applied Physics Letters.
2022/04/07

Our paper "Theory of Emergent Inductance with Spin-Orbit Coupling Effects"  by Y. Yamane, S. Fukami, and J. Ieda was published in Physical Review Letters.

2022/04/06
Our paper "Generalized scaling of spin qubit coherence in over 12,000 host materials" by Shun Kanai, F. Joseph Heremans, Hosung Seo, Gary Wolfowicz, Christopher P. Anderson, Sean E. Sullivan, Mykyta Onizhuk, Giulia Galli, David D. Awschalom, and Hideo Ohno was published in Proceedings of National Academy of Science of the United States of America.
2022/03/25
Shinozaki kun (Doctor), Abe kun (Master), Takechi kun (Master), Hayakawa kun (Master) received their degree. Congratulations! We hope for your success in new place.
2022/03/18
Professor Fukami was selected to the Inamori Research Institute for Science (InaRIS) Fellowship Program. The accepted research topic is "Induction of “intelligence” in materials by artificial control and its development to computing".
InaRIS Fellow Profile Video on YouTube is here.
2022/03/17
Motoya Shinozaki (D3) is awarded the Graduate School of Engineering Award. Congratulations!
2022/03/15
Our review paper "Domain wall memory: Physics, materials, and devices" by D. Kumar, T. Jin, R. Sbiaa, M. Kläui, S. Bedanta, S. Fukami, D. Ravelosona, S.-H. Yang, X. Liu, S.N. Piramanayagam was published in Physics Reports.
2022/03/09
An interview to Prof. Fukami was published online in an article titled "Laying the groundwork for a more resilient planet" as a part of "Big 5 science nations" in Nature.
2022/02/25
We hold a meeting of the graduation research presentations given by 6 students from Ikeda lab, Otsuka lab, and Fukami lab.
2022/02/02
Our paper "Nanometer-thin L10-MnAl film with B2-CoAl underlayer for high-speed and high-density STT-MRAM: Structure and magnetic properties" by Y. Takeuchi, R. Okuda, J. Igarashi, B. Jinnai, T. Saino, S. Ikeda, S. Fukami, and H. Ohno was published in Applied Physics Letters.
This paper is selected to Editor's Pick. 
2022/01/18
Outreach video of spintronics research sponsored by the IEEE Magnetics Society was released. Prof. Fukami and Prof. Hyunsoo Yang of the National University of Singapore appear in the video. 
2022/01/13
Our paper "Hardware-Aware In Situ Learning Based on Stochastic Magnetic Tunnel Junctions" by J. Kaiser, W. A. Borders, K. Y. Camsari, S. Fukami, H. Ohno, and S. Datta was published in Physical Review Applied.
This paper is selected to Editors' Suggestion.
2022/01/12
Professor Hideo Ohno received the IEEE Magnetics Society’s 2022 Achievement Award for "fundamental discoveries of spintronic phenomena and their applications in memory and computing technologies.”
2022/01/07
Our paper "Modification of unconventional Hall effect with doping at the nonmagnetic site in a two-dimensional van der Waals ferromagnet" by R. R. Chowdhury, C. Patra, S. DuttaGupta, S. Satheesh, S. Dan, S. Fukami & R. P. Singh was published in Physical Review Materials.
2021/12/21

Professor Ohno, the current president of Tohoku University, has been added to the International Fellows of the Royal Swedish Academy of Engineering Sciences.

2021/12/14

We present "Fast Switching Down to 3.5 ns in Sub-5-nm Magnetic Tunnel Junctions Achieved by Engineering Relaxation Time" (by B. Jinnai, J. Igarashi, T. Shinoda, K. Watanabe, S. Fukami, and H. Ohno) in the 67th Annual IEEE International Electron Devices Meeting (IEDM2021) on December 11-15 in San Francisco.

Press release: "Magnetic Tunnel Junction Technology for the Angstrom Semiconductor Era" 

2021/12/13

Our paper "Temperature dependence of intrinsic critical current in perpendicular easy axis CoFeB/MgO magnetic tunnel junctions" by Y. Takeuchi, E. C. I. Enobio, B. Jinnai, H. Sato, S. Fukami, and H. Ohno was published in Applied Physics Letters.
This paper is selected to Featured Articles. 

2021/11/29
Our paper "Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing" by M. Zahedinejad, H. Fulara, R. Khymyn, A. Houshang, M. Dvornik, S. Fukami, S. Kanai, H. Ohno and J. Åkerman was published in Nature Materials.

Press release is here.
2021/11/18
The online session of the 1st Online RIEC International Workshop on Spintronics was held. We had more than 400 registrants from more than 30 countries/regions. We are grateful to all the panelists, invited speakers, and registrants who actively joined the discussion.
You can watch the recorded video of the live session and invited talks on the on-demand cite at least until the end of March, 2022. Anyone who registered can access the on-demand page.
2021/11/05
It is our pleasure to announce the 1st Online RIEC International Workshop on Spintronics. The workshop consists of a live session to be held on November 18 and twelve on-demand invited talks. Once you register from the website of the workshop, you will receive a confirmation e-mail, which contains the information to access the on-demand contents and live session. 
The panelists of the live session include the following researchers.
　　　Pietro Gambardella (ETH Zürich)
　　　Tomáš Jungwirth (Czech Academy of Sciences)
　　　Mathias Kläui (Johannes Gutenberg-Universität Mainz)
　　　Kyung-Jin Lee (KAIST)
　　　Chi-Feng Pai (National Taiwan University)
　　　Shunsuke Fukami (Tohoku University)
We hope for your active participation.
2021/11/04

K. Kobayashi (M1) is awarded the Best Poster Award in The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics for his presentation entitled "Physical mechanism governing sigmoid curves of superparamagnetic tunnel junctions", and K. Kishi (M1) is awarded the Poster Award for his presentation entitled "Effect of spin-orbit torque on non-collinear antiferromagnet Mn3Sn".
Congratulations!

2021/10/19

Y. Yamane (Assistant Professor) is awarded the Young Scientist Award of the Physical Society of Japan for his research entitled "Theoretical study on electric response of noncollinear antiferromagnets".

2021/09/30

Our paper "Sigmoidal curves of stochastic magnetic tunnel junctions with perpendicular easy axis," by K. Kobayashi, W. A. Borders, S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami, was published in Applied Physics Letters.

2021/07/21

Prof. Fukami's talk entitled "Electrical Manipulation of Non-Collinear Antiferromagnet" given at the On-line SPICE-SPIN+X Seminar held on July 21  was posted on YouTube.

2021/07/16

Prof. Fukami's talk entitled "Nanosecond relaxation time in stochastic magnetic tunnel junction – theory and experiment" given at the online workshop held on June 19 organized by Petaspin/IEEE Magnetics Society - Italy chapter was posted on YouTube.

2021/07/08

Our paper "Unconventional Hall effect and its variation with Co-doping in van der Waals Fe3GeTe2" by R. Roy Chowdhury, S. DuttaGupta, C. Patra, O. A. Tretiakov, S. Sharma, S. Fukami, H. Ohno & R. P. Singh was published in Scientific Reports.

2021/06/30

Our paper "Spin-transport Mediated Single-shot All-optical Magnetization Switching of Metallic Films" by S. Iihama, Q. Remy, J. Igarashi, G. Malinowski, M. Hehn, and S. Mangin was published in Journal of the Physical Society of Japan.

2021/06/29

Our paper "Influence of domain wall anisotropy on the current-induced hysteresis loop shift for quantification of the Dzyaloshinskii-Moriya interaction" by T. Dohi, S. Fukami, and H. Ohno was published in Physical Review B.

2021/06/14

Our paper "Correlation of anomalous Hall effect with structural parameters and magnetic ordering in Mn3+xSn1−x thin films" by J.-Y. Yoon, Y. Takeuchi, S. DuttaGupta, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami was published in AIP Advances.

2021/05/19

Our paper "Electrically connected spin-torque oscillators array for 2.4 GHz WiFi band transmission and energy harvesting" by R. Sharma, R. Mishra, T. Ngo, Y.-X. Guo, S. Fukami, H. Sato, H. Ohno and H. Yang was published in Nature Communications.

Press release: "Wireless and Battery-free Spintronic Energy Harvester"

2021/05/13

Our paper "Chiral-spin rotation of non-collinear antiferromagnet by spin–orbit torque" by Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, S. Fukami and H. Ohno  was published in Nature Materials.

Press release: "A New Spintronic Phenomenon: Chiral-spin Rotation Found in Non-collinear Antiferromagnet"

2021/05/10

A roadmap article "Roadmap of spin-orbit torques" by Q. Shao, P. Li, L. Liu, H. Yang, S. Fukami et al. was published in the Early Access area of the IEEE Transactions on Magnetics.

2021/06/25 Formal version of this paper was published. Link to the paper.

2021/04/30

Our paper "Double-Free-Layer Magnetic Tunnel Junctions for Probabilistic Bits" by K. Y. Camsari, M. M. Torunbalci, W. A. Borders, H. Ohno, and S. Fukami was published in Physical Review Applied. This paper is selected to Editor's Suggestion.

In addition, a synopsis "Maximizing Volatility in Magnetic Tunnel Junctions" is published in Physics Magazine of the American Physical Society.

2021/04/26

A review paper "Quantum guidelines for solid-state spin defects" by G. Wolfowicz, F. J. Heremans, C. P. Anderson, S. Kanai, H. Seo, A. Gali, G. Galli, & D. D. Awschalom, was published in Nature Reviews Materials.

Press release: "A New Guideline for the Solid-state Spin Qubit"

2021/04/01

Uchimura kun, Kanno kun, and Chiba kun joined us as master course students.
Online kick-off meeting was held on April 2. 

 

2021/03/25

Igarashi kun (Doctor), Borders kun (Doctor), Okuda kun (Master), Takamatsu kun (Master), Zoysa kun (Master), K. Kishi kun (Bachelor), and Kobayashi kun (Bachelor) received their degree. Congratulations!

2021/03/25

Junta Igarashi (D3) is awarded the President's Award. Congratulations!

2021/03/23

K. Kobayashi (B4) is awarded the Outstanding Student Award of the Institute of Electronics, Information and Communication Engineers Tohoku. Congratulations!

2021/03/23

J. Igarashi (D3) is awarded the Best Poster Award in The 4th International Symposium for The Core Research Cluster for Spintronics for his presentation entitled "Ultra-Small Shape-Anisotropy Magnetic Tunnel Junctions: Physics and Device Engineering".
Congratulations!

2021/03/23

W. A. Borders (D3) is awarded the Graduate School of Engineering Award. Congratulations!

2021/03/19

Our papers "Nanosecond Random Telegraph Noise in In-Plane Magnetic Tunnel Junctions" by K. Hayakawa, S. Kanai, T. Funatsu, J. Igarashi, B. Jinnai, W. A. Borders, H. Ohno, and S. Fukami and "Theory of relaxation time of stochastic nanomagnets" by S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami are jointly published in Physical Review Letters and Physical Review B, respectively.
These papers are selected to Editor's Suggestion.

Press release: "Demonstrating the World's Fastest Spintronics p-bit"

2021/03/11

Our paper "Magnetization processes and magnetic domain structures in Ta/CoFeB/MgO stacks" by A. K. Dhiman, T. Dohi, W. Dobrogowski, Z. Kurant, I. Sveklo, S. Fukami, H. Ohno, A. Maziewski was published in Journal of Magnetism and Magnetic Materials.

2021/03/05

Our paper "Intrinsic and extrinsic tunability of Rashba spin-orbit coupled emergent inductors" by J. Ieda and Y. Yamane was published in Physical Review B as a Letter.
This paper is selected to Editor's Suggestion. 

2021/03/03

Our paper "Field-free and sub-ns magnetization switching of magnetic tunnel junctions by combining spin-transfer torque and spin–orbit torque" by C. Zhang, Y. Takeuchi, S. Fukami, and H. Ohno was published in Applied Physics Letters.

This paper is selected to Editor's Pick. 

2021/02/24

Our paper "Coherent magnetization reversal of a cylindrical nanomagnet in shape-anisotropy magnetic tunnel junctions" by B. Jinnai, J. Igarashi, K. Watanabe, E. C. I. Enobio, S. Fukami, and H. Ohno was published in Applied Physics Letters.
This paper is selected to Editor's Pick. 

(2021/3/30; Erratum on this paper was published. In the original article, “sin” and “cos” were mistakenly swapped. The analysis was made by the correct form and the conclusions of the paper are not affected by this erratum.)

2021/01/08

Our paper "Temperature dependence of the energy barrier in X/1X nm shape-anisotropy magnetic tunnel junctions" by J. Igarashi, B. Jinnai, V. Desbuis, S. Mangin, S. Fukami, and H. Ohno was published in Applied Physics Letters.

2020/12/09

Our paper "Dual-Port SOT-MRAM Achieving 90-MHz Read and 60-MHz Write Operations Under Field-Assistance-Free Condition" by M. Natsui, A. Tamakoshi, H. Honjo, T. Watanabe, T. Nasuno, C. Zhang, T. Tanigawa, H. Inoue, M. Niwa, T. Yoshiduka, Y. Noguchi, M. Yasuhira, Y. Ma, H. Shen, S. Fukami, H. Sato, S. Ikeda, H. Ohno, T. Endoh, and T. Hanyu was published in an Early Access area of IEEE Journal of Solid-State Circuits.

2020/12/08

We will present "High-Performance Shape-Anisotropy Magnetic Tunnel Junctions down to 2.3 nm" (by B. Jinnai, J. Igarashi, K. Watanabe, T. Funatsu, H. Sato, S. Fukami, and H. Ohno) in the IEEE International Electron Devices Meeting (IEDM2020) on December 12-18.

Press release: "The World's Smallest High-performance Magnetic Tunnel Junction" 

2020/11/23

Our paper "Engineering Single-Shot All-Optical Switching of Ferromagnetic Materials" by J. Igarashi, Q. Remy, S. Iihama, G. Malinowski, M. Hehn, J. Gorchon, J. Hohlfeld, S. Fukami, H. Ohno, and S. Mangin was published in Nano Letters.

2020/11/17

Our paper "Probing edge condition of nanoscale CoFeB/MgO magnetic tunnel junctions by spin-wave resonance" by M. Shinozaki, T. Dohi, J. Igarashi, J. Llandro, S. Fukami, and H. Ohno was published in Applied Physics Letters.

2020/11/13

J. Igarashi (D3) was awarded the Young Scientist Presentation Award in the JSAP Autumn Meeting. The title of the presentation was "Energy barrier of X/1X-nm shape-anisotropy magnetic tunnel junctions at high temperature". Congratulations!

2020/11/11

Our paper "Spin-orbit torque switching of an antiferromagnetic metallic heterostructure" by Samik DuttaGupta, A. Kurenkov, Oleg A. Tretiakov, G. Krishnaswamy, G. Sala, V. Krizakova, F. Maccherozzi, S. S. Dhesi, P. Gambardella, S. Fukami & H. Ohno  was published in Nature Communications.

Press release: "Antiferromagnetic Material's Giant Stride Towards Application". 

2020/11/05

J. Igarashi (D3) was awarded the Best English Presentation Award in the JSAP Autumn Meeting. The title of the presentation was "Energy barrier of X/1X-nm shape-anisotropy magnetic tunnel junctions at high temperature". Congratulations!

2020/10/20

Our paper "Multidomain Memristive Switching of Pt38Mn62/[Co/Ni]n Multilayers" by G. K. Krishnaswamy, A. Kurenkov, G. Sala, M. Baumgartner, V. Krizakova, C. Nistor, F. Maccherozzi, S. S. Dhesi, S. Fukami, H. Ohno, and P. Gambardella was published in Physical Review Applied.

2020/10/16

Our paper "Energy Efficient Control of Ultrafast Spin Current to Induce Single Femtosecond Pulse Switching of a Ferromagnet" by Q. Remy, J. Igarashi, S. Iihama, G. Malinowski, M. Hehn, J. Gorchon, J. Hohlfeld, S. Fukami, H. Ohno, and S. Mangin was published in Advanced Science.

Press release is here.

2020/09/24

Prof. Ohno (Advisor) gave an online seminar entitled "Spintronics Nanodevice - How small can we make it and what else can we use it for -" at the On-line SPICE-SPIN+X Seminars. The video is available on YouTube.

2020/09/21

Our paper "All-optical probe of magnetization precession modulated by spin–orbit torque" by K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, and S. Mizukami was published in Applied Physics Letters. This paper is selected to a Featured Article.

2020/08/19

Our paper "Antiferromagnetic spintronics" by S. Fukami, V. O. Lorenz, and O. Gomonay was published in Journal of Applied Physics.
This paper is a Guest Editorial for the Special Topic "Antiferromagnetic Spintronics" in the Journal of Applied Physics, to which Prof. Fukami had served as a Guest Editor. 

2020/08/11

Our paper "Giant voltage-controlled modulation of spin Hall nano-oscillator damping" by H. Fulara, M. Zahedinejad, R. Khymyn, M. Dvornik, S. Fukami, S. Kanai, H. Ohno and J. Åkerman was published in Nature Communications.

Press release is here.

2020/07/09

Our paper "Composition dependence of spin−orbit torque in Pt1−xMnx/CoFeB heterostructures" by K. V. De Zoysa, S. DuttaGupta, R. Itoh, Y. Takeuchi, H. Ohno, and S. Fukami was published in Applied Physics Letters. This paper is selected to Editor's Pick.

2020/07/01

Our invited paper "Neuromorphic computing with antiferromagnetic spintronics" by A. Kurenkov, S. Fukami, H. Ohno. was published in Journal of Applied Physics.

2020/06/24

Our paper "Current distribution in metallic multilayers from resistance measurements" by O. Stejskal, A. Thiaville, J. Hamrle, S. Fukami, and H. Ohno was published in Physical Review B.

2020/04/20

Our review paper "Scaling magnetic tunnel junction down to single-digit nanometers — Challenges and prospects" by B. Jinnai, K. Watanabe, S. Fukami, H. Ohno was published in Applied Physics Letters. This paper is selected to a Featured Article.

2020/04/06

Our paper "Visualizing Magnetic Structure in 3D Nanoscale Ni–Fe Gyroid Networks" by J. Llandro, S. Fukami, H. Ohno et al. was published in Nano Letters.

Press release is here.

2020/04/01

N. Abe-kun(M1) has joined us! 

Welcome to our laboratory!

2020/03/26

Degree award ceremony was held. Takeuchi kun (D), Dohi kun (D), Koga kun (M), Funatsu kun (M), Furuya kun (M), Miyasaka kun (M), Takechi kun (B), and Hayakawa kun (B), congratulations! We hope for your success in new place.

2020/03/25

T. Dohi (D3) has received the Graduate School of Engineering Award. Congratulations!

2020/03/02

A review paper "Neuromorphic spintronics" by J. Grollier, D. Querlioz, K. Y. Camsari, K. Everschor-Sitte, S. Fukami & M. D. Stiles was published in Nature Electronics.

2020/02/11

Dr. Samik DuttaGupta, an Assistant Professor of CSIS, is awarded the Best Poter Award in  held in Sendai International Center. Congratulations!

2020/02/01

Dr. Yuta Yamane, an Assistant Professor of the Frontier Research Institute for Interdisciplinary Sciences, joined us.

2019/12/17

Dr. Aleksandr Kurenkov was awarded the Grand Prize of 2018-19 Photo Contest of Tohoku University. Congratulations!
Link to University website

2019/12/11

Our paper "Stack structure and temperature dependence of spin-orbit torques in heterostructures with antiferromagnetic PtMn" by R. Itoh, Y. Takeuchi, S. DuttaGupta, S. Fukami, and H. Ohno was published in Applied Physics Letters.

2019/12/09

We will report a result of SOT-MRAM at IEDM2019 held in San Francisco, USA. This research has been conducted under a collaboration with the Center for Innovative Integrated Electronic Systems, Tohoku University.
Press release is here. 

2019/12/06

We hold the 17th RIEC International Workshop on Spintronics and the 10th JSPS Core-to-Core Workshop, consisting of 28 invited talks/lectures and 35 poster presentations. We had 125 participants from 14 countries.


The 18th RIEC International Workshop on Spintronics is tentatively scheduled in November, 2020. We look forward to seeing you then!  

2019/12/01

Commentary article entitled "スピン軌道トルク素子の脳型情報処理応用" written by Assoc. Prof. S. Fukami was published in "まぐね".

2019/11/14

Our paper "Formation and current-induced motion of synthetic antiferromagnetic skyrmion bubbles" by T. Dohi, S. DuttaGupta, S. Fukami, and H. Ohno was published in Nature Communications and was selected to the Editor's Highlight.

Press release for this paper is here.

2019/10/25

Our co-authored paper "Giant perpendicular magnetic anisotropy in Ir/Co/Pt multilayers" by Y.-C. Lau, Z. Chi, T. Taniguchi, M. Kawaguchi, G. Shibata, N. Kawamura, M. Suzuki, S. Fukami, A. Fujimori, H. Ohno, and M. Hayashi has been published in Physical Review Materials.

2019/10/01

Our paper "Write-error rate of nanoscale magnetic tunnel junctions in the precessional regime," by T. Saino, S. Kanai, M. Shinozaki, B. Jinnai, H. Sato, S. Fukami, and H. Ohno was published in Applied Physics Letters.

2019/09/20

W. A. Borders (D2) received the Outstanding Paper Award and T. Dohi (D3) received the  Young Scientist Presentation Award in a ceremony held in the 80th JSAP Autumn Meeting 2019 in Hokkaido University

 

2019/09/19

Our paper "Integer factorization using stochastic magnetic tunnel junctions" by W. A. Borders, A. Z. Pervaiz, S. Fukami, K. Y. Camsari, H. Ohno ＆ S. Datta was published in Nature.

Press release for this paper is here.

2019/07/23

Our paper "Spin-Pumping-Free Determination of Spin-Orbit Torque Efficiency from Spin-Torque Ferromagnetic Resonance" by A. Okada, Y. Takeuchi., K. Furuya, C. Zhang, H. Sato, S. Fukami, and H. Ohno was published in Physical Review Applied.

2019/07/13

We held welcome party for Valentin.

2019/07/10

W. A. Borders (D2), S. Fukami (Assoc. Prof.), and H. Ohno (Adviser) received the Japanese Society of Applied Physics, Outstanding Paper Award for their paper "Analogue spin–orbit torque device for artificial-neural-network-based associative memory operation" published in Applied Physics Express in 2017.

2019/06/18

Mr. Valentin Desbuis, an internship student from School of Mines Nancy, joined us.

2019/06/15

T. Dohi (D3) has started a four-month overseas study at Argonnne National Laboratory under the Graduate Program in Spintronics (GP-Spin), Tohoku University.

2019/05/20

Professor Hideo Ohno received ISCS Welker Award for his "seminal contributions to the materials science, physics of ferromagnetic III-V semiconductors and spintronics."
Link to the website of University

2019/05/15

T. Dohi (D3) is awarded the Young Scientist Presentation Award of the Japanese Society of Applied Physics for his talk entitled "Ferromagnetic layer thickness dependent domain wall chirality and sign of effective Dzyaloshinskii-Moriya field in W/(Co)FeB/MgO systems."

2019/04/16

Our paper "Artificial Neuron and Synapse Realized in an Antiferromagnet/Ferromagnet Heterostructure Using Dynamics of Spin–Orbit Torque Switching" by A. Kurenkov, S. DuttaGupta, C. Zhang, S. Fukami, Y. Horio, and H. Ohno has been published in Advanced Materials.
Press release for this paper is here.

2019/04/10

We held cherry‐blossom viewing (Hanami) party with members from Ohtsuka Lab. & Ikeda Lab.

2019/04/01

T. Kishi-kun(M1), M. Takamatsu-kun(M1), Yoon-kun(M1) have joined us! 

Welcome to our laboratory!

2019/03/28

Assoc. Prof. S. Fukami is awarded the "Gold Prize of the Tanaka Kikinzoku Memorial Foundation"

2019/03/27

Today, Degree award ceremony was held.

Watanabe kun(D3), Itoh kun(M2), Saino kun(M2), Takahashi kun(M2), Wang kun(M2), conguratulations for getting your degrees!

We hope for your success in new place!

2019/03/26

K. Watanabe (D3) has received the Graduate School of Engineering Award.

2019/03/01

Today, We held a party for graduation of members of M2 and D3 students in Fukami (Associate) laboratory.

2019/02/18

Dr. Aleksandr Kurenkov is awarded "The Best Poter Award" in The 2nd Symposium for World Leading Research Centers held in Sendai International Center.

 

2019/02/17

J. Igarashi (D1) has started a three-month placement at Lorraine University within the Graduate Program in Spintronics (GP-Spin), Tohoku University.

2019/02/12

We went to Inawashiro Ski and enjoyed skiing/snowboarding.

2019/02/07

We held a party for final thesis of B4 and M2 and D3 students with Ikeda lab.

2019/01/31

Our paper "Reversal of domain wall chirality with ferromagnet thickness in W/(Co)FeB/MgO systems" by T. Dohi, S. DuttaGuputa, Fukami, and H. Ohno has been published in Applied Physics Letters.

2019/01/17

C. Zhang(Assistant Prof.), T. Dohi(D2), J. Igarashi(D2), M. Shinozaki(D1), K. Furuya(M1) attended "2019 MMM-intermag Joint Conference".

2019/01/11

Our paper "Spin-orbit torque-induced switching of in-plane magnetized elliptic nanodot arrays with various easy-axis directions measured by differential planar Hall resistance" by Y. Takahashi, Y. Takeuchi, C. Zhang, B. Jinnai, S. Fukami, and H. Ohno has been published in Applied Physics Letters.

2019/01/09

We held our annual workshop, "16th RIEC Internatinal Workshop on Spintronics", in the nano-spin building.

There were 116 participants, (33 of them were from overseas) and densely discussed "the newest spintronics".

2018/12/14

Our paper "Temperature-dependent properties of CoFeB/MgO thin films: Experiments versus simulations" by H. Sato, P. Chureemart, F. Matsukura, R. W. Chantrell, H. Ohno, and R. F. L. Evans has been published in Physical Review B.

2018/12/13

We held a year-end party with the member of Ohtsuka Lab. and Ikeda Lab.

2018/11/22

We held wrap up party for EKIDEN & K. Watanebe's predefense.

2018/11/20

Our paper "Scalability and wide temperature range operation of spin-orbit torque switching devices using Co/Pt multilayer nanowires" by B. Jinnnai, H. Sato, S. Fukami, and H. Ohno has been published in Applied Physics Letters .
 

 

2018/11/15

Our paper "Angle dependent magnetoresistance in heterostructures with antiferromagnetic and non-magnetic metals" by S. DuttaGupta, R. Itoh, S. Fukami, and H. Ohno has been published in Applied Physics Letters, and selected as "Featured Article".
In addition, AIP publishing has separately published a science highlight (Scilight) that deals with this article. 

 

2018/11/10

EKIDEN relay race was held.

We finished at  14th position... but did our best!

Thank you very very much for our Teacher(Professor), students who participated in EKIDEN.

 

2018/10/30

We held Colloqium camp with Ohtsuka Lab. 

 

2018/10/23

We held "Imoni" party. It was great and well done.

2018/10/22

Our paper "An effect of capping-layer material on interfacial anisotropy and thermal stability factor of MgO/CoFeB/Ta/CoFeB/MgO/capping-layer structure" by M. Bersweiler, E. C. I. Enobio, S. Fukami, H. Sato, and H. Ohno has been published in Applied Physics Letters.

2018/10/15

Y. Takeuchi (D2) has started a three-month placement at Technical University of Munich within the Graduate Program in Spintronics (GP-Spin), Tohoku University.

2018/10/10

Z. Wang(M2), T. Koga(M1), T. Funatsu(M1), K. Furuya(M1), K. Miyasaka(M1) attended "The 37th Electronic Materials Symposium".

2018/10/09

Our paper "Spintronic synapse for artificial neural network" by S. Fukami, and H. Ohno has been published in Japanese Journal of Applied Physics.

2018/10/04
Commentary article written by Assoc. Prof. S. Fukami was published in "まぐね"
2018/09/21

We celebrated R. Okuda(B4), Z. K. Vihanga(B4), K. Furuya(B4) finishing the end of master cource exam.

2018/09/10

Our paper "Characterization of spin–orbit torque-controlled synapse device for artificial neural network applications" by W. A. Borders, S. Fukami, and H. Ohno has been published in Japanese Journal of Applied Physics.

2018/08/23

Assoc. Prof. S. Fukami is Awarded "The Magnetics Society of Japan Outstanding Research Award."

2018/08/03

J. Igarashi has come back from 2-month internship in Lorraine university.

2018/07/20

S. DuttaGupta(Assistant Prof.), A. Kurenkov(Post-Doc.),  K. Watanabe(D3), Y. Takeuchi(D2), R. Itoh(M2), Y. Takahashi(M2) attended ICM2018 SanFrancisco and K. Watanabe got a "Best Poster Award".

2018/07/05

We celebrated R. Itoh(M2), Y. Takahashi(M2), T. Saino(M2), C. Wang(M2) getting a job and K. Watanabe(D2) coming home from a study abroad in France.

2018/07/03

K. Watanabe has come back from 6-month internship in Spintec.

2018/06/19

Our paper "Evidence for Ferromagnetic Clusters in the Colossal-Magnetoresistance Material EuB6" by M. Pohlit, S. Rößler, Y. Ohno, H. Ohno, S. Molnár, Z. Fisk, J. Müller, and S. Wirth has been published in Physical Review Letters.

2018/05/31

J. Igarashi (D1) has started a three-month placement at Lorraine University within the Graduate Program in Spintronics (GP-Spin), Tohoku University.

2018/05/15

Our paper "Non-linear variation of domain period under electric field in demagnetized CoFeB/MgO stacks with perpendicular easy axis" by N. Ichikawa, T. Dohi, A. Okada, H. Sato, S. Fukami, and H. Ohno has been published on Applied Physics Letters, and selected as "Featured Article."

2018/05/10

Our paper "Spin-orbit torques in high-resistivity-W/CoFeB/MgO" by Y. Takeuchi, C. Zhang, A. Okada, H. Sato, S. Fukami, and H. Ohno has been published on Applied Physics Letters.

2018/05/02

Assoc. Prof. S. Fukami is Awarded "AUMS Young Researchers Award."

2018/04/23

Our paper "Electric-field effect on the easy cone angle of the easy-cone state in CoFeB/MgO investigated by ferromagnetic resonance" by A. Okada, S. Kanai, S. Fukami, H. Sato, and H. Ohno has been published in Applied Physics Letters.

2018/04/01

New Laboratory; Spintronics Group, Information Devices Division, Research Institute of Electrical Communication, Tohoku University is established.