Fujimoto Group

About us

Publications

Preprint

1. "Determination of spin relaxation time and spin diffusion length by oscillation of spin pumping signal" Junji Fujimoto, and Mamoru Matsuo, arXiv:1907.04639
2. "Field theoretical approach to spin torques: Slonczewski torques" Junji Fujimoto, arXiv:2208.09581
3. "Electron Hydrodynamics by Spin Hall Effect" Junji Fujimoto, Wataru Koshibae, and Sadamichi Maekawa, arXiv:2303.17234

Peer-reviewed

1. "Dirac Liquid Theory: 2nd Order Perturbation Approach" Junji Fujimoto, Yuki Fuseya, and Kazumasa Miyake, J. Phys. Soc. Jpn. Suppl. 81, SB042 (2012).
2. "Ultraviolet divergence and Ward-Takahashi identity in a two-dimensional Dirac electron system with short-range impurities" Junji Fujimoto, Akio Sakai, and Hiroshi Kohno, Phys. Rev. B 87, 085437 (2013).
3. "Transport Properties of Dirac Ferromagnet" Junji Fujimoto, and Hiroshi Kohno, Phys. Rev. B 90, 214418 (2014). arXiv:1404.4741
4. "Strong Bias Effect on Voltage-Driven Torque at Epitaxial Fe-MgO Interface" Shinji Miwa, Junji Fujimoto, Philipp Risius, Kohei Nawaoka, Minori Goto, and Yoshishige Suzuki, Phys. Rev. X 7, 031018 (2017).
5. "Intrinsic and Extrinsic Spin Hall Effects of Dirac Electrons" Takaaki Fukazawa, Hiroshi Kohno, and Junji Fujimoto, J. Phys. Soc. Jpn. 86, 094704 (2017). arXiv:1705.03605
6. "Transport Coefficients of Dirac Ferromagnet: Effects of Vertex Corrections" Junji Fujimoto, Phys. Rev. B 97, 104421 (2018). arXiv:1708.06105
7. "Nonlocal spin-charge conversion via Rashba spin-orbit interaction" Junji Fujimoto, and Gen Tatara, Phys. Rev. B 99, 054407 (2019). arXiv:1812.08884
8. "Alternating current-induced interfacial spin-transfer torque" Junji Fujimoto, and Mamoru Matsuo, Phys. Rev. B 100, 220402(R) (2019). arXiv:1910.01306
9. "Valley-Dependent Spin Transport in Monolayer Transition-Metal Dichalcogenides" Yuya Ominato, Junji Fujimoto, and Mamoru Matsuo, Phys. Rev. Lett. 124, 166803 (2020). arXiv:2001.08670
10. "Magnon current generation by dynamical distortion" Junji Fujimoto, and Mamoru Matsuo, Phys. Rev. B 102, 020406(R) (2020). arXiv:2004.14707
11. "Adiabatic and nonadiabatic spin-transfer torques in antiferromagnets" Junji Fujimoto, Phys. Rev. B 103, 014436 (2021). arXiv:2009.02686
12. "Generation of current vortex by spin current in Rashba systems" Florian Lange, Satoshi Ejima, Junji Fujimoto, Tomonori Shirakawa, Holger Fehske, Seiji Yunoki, and Sadamichi Maekawa, Phys. Rev. Lett. 126, 157202 (2021). arXiv:2011.08574
13. "Zeeman coupling and Dzyaloshinskii-Moriya interaction driven by electric current vorticity" Junji Fujimoto, Wataru Koshibae, Mamoru Matsuo, and Sadamichi Maekawa, Phys. Rev. B 103, L220402 (2021).
14. "Spin-charge conversion and current vortex in spin-orbit coupled systems" (invited) Junji Fujimoto, Florian Lange, Satoshi Ejima, Tomonori Shirakawa, Holger Fehske, Seiji Yunoki, and Sadamichi Maekawa, APL Materials 9, 060904 (2021). arXiv:2103.06540
15. "Skyrmion Creation and Annihilation by Electric Current Vorticity" (invited) Junji Fujimoto, Hiroshi Funaki, Wataru Koshibae, Mamoru Matsuo, and Sadamichi Maekawa, IEEE Trans. on Magn. 58, 1500407 (2022).
16. "Thermoelectric power generation via transverse thermo-spin conversions" (invited) (Featured) (Scilight) Junji Fujimoto, and Masao Ogata, Appl. Phys. Lett. 120, 122404 (2022).
17. "Seebeck effect of Dirac electrons" Junji Fujimoto, and Masao Ogata, J. Phys. Soc. Jpn. 91, 054603 (2022). arXiv:2106.04050
18. "Spin Hall effect driven by the spin magnetic moment current in Dirac materials" Zhendong Chi, Guanxiong Qu, Yong-Chang Lau, Masashi Kawaguchi, Junji Fujimoto, Koki Takanashi, Masao Ogata, and Masamitsu Hayashi, Phys. Rev. B 105, 214419 (2022). arXiv:2205.11669
19. "The chirality-dependent second-order spin current in systems with time-reversal symmetry" Ryosuke Hirakida, Junji Fujimoto, and Masao Ogata, Phys. Rev. B 106, 085127 (2022). arXiv:2204.03263
20. "A large modulation of spin pumping using magnetic phase transitions in single crystalline dysprosium" Kazuto Yamanoi, Yuri Sakakibara, Junji Fujimoto, Mamoru Matsuo, and Yukio Nozaki, Appl. Phys. Express 16, 063004 (2023).
21. "Anisotropy of the spin Hall effect in a Dirac ferromagnet" Guanxiong Qu, Masamitsu Hayashi, Masao Ogata, and Junji Fujimoto, Phys. Rev. B 108, 064404 (2023). arXiv:2308.02336
22. "Microscopic theory of spin Nernst effect" Junji Fujimoto, Taiki Matsushita, and Masao Ogata, Phys. Rev. B 110, 174411 (2024) arXiv:2406.02932

Presentations

Poster presentation

1. "Dirac Liquid Theory: 2nd Order Perturbation Approach" Junji Fujimoto, Yuki Fuseya, and Kazumasa Miyake, TOKIMEKI 2011 International workshop on heavy fermions, Osaka, Japan, 2011.
2. "Transport properties of Dirac Ferromagnet" Junji Fujimoto, and Hiroshi Kohno, the 7th International Conference on Physics and Applications of Spin-related Phenomena in Semiconductor (PASPS-VII), Eindhoven, The Netherlands, 2012.
3. "Transport properties of Dirac Ferromagnet" Junji Fujimoto, and Hiroshi Kohno, The 8th International Symposium on Metallic Multilayers (MML2013), Kyoto, Japan, 2013.
4. "Transport properties of Dirac Ferromagnet" Junji Fujimoto, and Hiroshi Kohno, Concepts in Spintronics, KITP(UCSB), California, US, 2013.
5. "Effects of Dirac points on Rashba spin-orbit torques" Junji Fujimoto, and Hiroshi Kohno, New Perspectives in Spintronic and Mesoscopic Physics, Kashiwa, Japan, 2015.
6. "Effects of skew scattering on non-dissipative transport properties" Junji Fujimoto, and Hiroshi Kohno, International workshop on nano-spin conversion science & quantum spin dynamics, University of Tokyo, Japan, 2016.
7. "Non-local spin-to-charge conversion via Rashba spin-orbit coupling" Junji Fujimoto, and Gen Tatara, One-Day Symposium on Spintronic Properties of Graphene and Related 2D Materials, University of Tokyo, Japan, 2018.
8. "Magnetic skyrmion creation by electron hydrodynamic effects" Junji Fujimoto, Wataru Koshibae, Hirhoshi Funaki, Mamoru Matsuo, and Sadamichi Maekawa, 29th International Conference on Low Temperature Physics, Sappro Convention Center, Japan, 2022.
9. "Anti-Poiseuille flow by spin Hall effect" Junji Fujimoto, Wataru Koshibae, and Sadamichi Maekawa, International Symposium on Quantum Electronics, Ito International Research Center, The University of Tokyo, Japan, 2024.

Oral presentation

1. "Microscopic calculation of Rashba spin-orbit torques" Junji Fujimoto, and Hiroshi Kohno, APS March Meeting 2015, San Antonio, TX, US, Mar. 2015.
2. "Effects of non-local emergent electromagnetic fields driven by Rashba spin-orbit coupling" Junji Fujimoto, and Gen Tatara, APS March Meeting 2018, Los Angels, CA, US, Mar. 2018.
3. "Zeeman Coupling and Dzyaloshinskii-Moriya Interaction driven by Electric Current Vorticity" invited Junji Fujimoto, Wataru Koshibae, Matsuo Matsuo, and Sadamichi Maekawa, APW-RIKEN-Tsinghua-Kavli workshop, oneline, Sept. 2020.
4. "Spin-charge conversion and current vortex" invited Junji Fujimoto, APW-RIKEN-Tsinghua-Kavli workshop, oneline, Oct. 2021.
5. "Skyrmion Creation and Annihilation by Electric Current Vorticity" invited Junji Fujimoto, Hiroshi Funaki, Wataru Koshibae, Matsuo Matsuo, and Sadamichi Maekawa, The 15th Joint MMM-INTERMAG Conference, oneline, Jan. 2022.
6. "Electron hydrodynamics by spin Hall effect" invited Junji Fujimoto, The Asia-Pacific Workshop on Strongly Correlated Systems 2023, Institute of Physics, CAS, China, Sep. 2023.
7. "Theory of spin manipulation by geometrical structures via electric current" invited Junji Fujimoto, Wataru Koshibae, Hiroshi Funaki, Mamoru Matsuo, and Sadamichi Maekawa, MRM2023/IUMRS-ICA2023, Kyoto International Conference Center, Kyoto, Japan, Dec. 2023.
8. "Spin-vorticity interaction" invited Junji Fujimoto, New Perspectives in Spintronics and Quantum Transport, KKR Hotel Kanazawa, Ishikawa, Japan, Jun. 2024.

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