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.
Dr. Aurelien Lagarrigue joined us as a Postdoctoral Fellow.
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.
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.
We held “Imoni party”, a traditional event in Tohoku region similar to barbecue.
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.
Press release (external cite): Magnetic whirls pave the way for energy-efficient computing
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.
Press release: Unveiling the Anomalous Dynamics of Non-collinear Antiferromagnets
Dr. Zhaochu Luo (Visiting Researcher) returned to Peking University after three months stay.
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.
Dr. Katarzyna Gas joined us as an Assistant Professor of CSIS.
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.
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.
We will have Workshop on Interdisciplinary Spin Physics on June 1st.
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.
Dr. Zhaochu Luo of Peking University joined us as a Visiting Researcher.
We held a Cherry Blossom Viewing (Hanami party)!
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.
Prof. Justin Llandro (Assistant Professor), Mr. Kanno (MC), Mr. Kishi (MC), Mr. Kobayashi (MC) graduated. We hope for your success in your new place!
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.
Mr. Kanno, Mr. Kishi, Mr. Kobayashi, and Mr. Chiba received the Master Degree. Congratulations!
Mr. Keito Kobayashi (M2) is awarded the President’s Prize. Congratulations!
Mr. W. A. Borders (D3) is awarded the Graduate School of Engineering Award. Congratulations!
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.
Our review paper “Coherent antiferromagnetic spintronics” by J. Han, R. Cheng, L. Liu, H. Ohno and S. Fukami was published in Nature Materials.
Press release: A New Chapter in Antiferromagnetic Spintronics is Unfolding
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.
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.
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!!
Press release: Sub-picosecond Magnetization Reversal in Rare-earth-free Spin Valves
We hold a meeting of the graduation research presentations given by 4 students from Ikeda lab, Otsuka lab, and Fukami lab.
Dr. Yukihiro Marui joined us as a Postdoctoral Fellow.
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!
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.
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”
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.
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.
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.
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!
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.
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!
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“
Mr. 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!
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.
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.
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.
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.
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.
Press release: “A Mathematical Shortcut for Determining Quantum Information Lifetimes“
Mr. Shinozaki (Doctor), Mr. Abe (Master), Mr. Takechi (Master), and Mr. Hayakawa (Master) received their degree. Congratulations! We hope for your success in new place.
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.
Mr. Motoya Shinozaki (D3) is awarded the Graduate School of Engineering Award. Congratulations!
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.
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.
We hold a meeting of the graduation research presentations given by 6 students from Ikeda lab, Otsuka lab, and Fukami lab.
