Makoto Kohda

Tohoku University, Department of Materials Science
Associate Professor

field of expertise

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Research activities and collaboration network
Introduction in English and selected papers are here

What’s new

  • December 2020 I was awarded the 14th Aoba Foundation for the Promotion of Engineering Award. I have received this award for our research on the establishment of new spin control principles in semiconductors and long range spin transport. Thank you very much for this award.
  • June 2020 When the spin relaxation time depends on the crystal orientation, there is an anisotropy in the spin relaxation. This anisotropy has been considered to be an intrinsic value because of spin-orbit coupling, but we have shown for the first time that it can be controlled. The control of the spin-relaxation anisotropy revealed for III-V semiconductors may also appear in topological materials, oxides and atomic layer materials.“Control of Spin Relaxation Anisotropy by Spin-Orbit-Coupled Diffusive Spin Motion”, Daisuke Iizasa, Asuka Aoki, Takahito Saito, Junsaku Nitta, Gian Salis, Makoto Kohda, arXiv:2006.08253.
  • June 2020 The permanent spin-turning state is one of the most effective methods for suppressing spin relaxation in III-V semiconductors, and we theoretically identified the crystal orientation where this state is most stable. We have shown that the 225 surface, which has not been studied at all, is the most stable. This paper has been selected as an Editor’s Suggestion by PRB.“Enhanced longevity of the spin helix in low-symmetry quantum wells”, Daisuke Iizasa, Makoto Kohda, Ulrich Zulicke, Junsaku Nitta, Michael Kammermeier, Physical Review B,101,(2020), 245417. Press Release(Tohoku University). Press Release(Graduate School of Engineering). Press Release(Materials). Press Release(FRiD). radio wave newspaper Press Release in English. EurekAlert. Nikkan Kogyo Shimbun .
  • March 2020 A paper on spin control using spin-orbit locking has been selected as one of the Top 100 Downloaded Papers in Physics in Scientific Reports for 2019. This is the first time that spin-orbit locking, which exists at various material interfaces, has been used for spin control. If you are interested in this article, please see it.Top 100 in Physics 2019 Scientific Reports,9,(2019),1909.
  • March 2020 I was awarded the Achievement Award of the Japan Institute of Metals. I received the award for my research on the electrical control of spin-magnetization by using spin-orbit interaction. Thank you.
  • October 2019 We have shown that the spin-orbit interaction can be obtained from spin diffusion even in the transient region before the formation of the spin wave. This is a joint research with Associate Professor Morita of Chiba University. We found that the spin diffusion phenomenon works universally in both the spin-wave excited micro region and the plane-wave excited macro region. “Transient diffusive spin dynamics in intrinsic InGaAs/InAlAs multiple quantum wells” K. Kawaguchi, T. Fukasawa, I. Takazawa, H. Shida, Y. Saito, D. Iizasa, T. Saito, T. Kitada, Y. Ishitani, M. Kohda, and K. Morita Applied Physics Letters,115,(2019),172406.
  • July 2019 The effects of diffusion and drift motions on spin precession are studied. The effective magnetic field generated by spin-orbit interactions can be evaluated with high precision. We have successfully separated the spin precession governed by diffusion and drift motions in GaAs quantum wells. Both motions produce an effective magnetic field, and we were able to clarify the difference between them. “Simultaneous evaluation of drift- and diffusion-induced spin-orbit fields in a (001) GaAs/AlGaAs two-dimensional electron gas” T. Saito, A. Aoki, J. Nitta, and M. Kohda Applied Physics Letters,115,(2019),052402.
  • May 2019 Simultaneous control of valley polarization and valley coherence in single layer MoS2 This is a fundamental technology for valley quantum information. We have optically detected the polarization and coherence production of K and K’ valleys in transition metal chalcogenide MoS2. We have shown that valley polarization and valley coherence, which are important elemental techniques corresponding to spin polarization and spin coherence, can be generated optically in order to freely control the valley degrees of freedom. This is an important step towards optical valence quantum information. “Detection of both optical polarization and coherence transfers to excitonic valley states in CVD-grown monolayer MoS2” E. Asakura, M. Suzuki, S. Karube, J. Nitta, K. Nagashio and M. Kohda Applied Physics Express,12,(2019),063005.
  • February 2019 We have realized a highly efficient spin control method in semiconductors. We have established a new method of spin-orbit locking for spin control. We have demonstrated a new principle that enables efficient spin control while suppressing spin relaxation. By using spin-orbit locking, the electron spins can be controlled while always being aligned in the direction of the effective magnetic field, which suppresses spin relaxation and is expected to make a significant contribution to quantum information and spintronics. “Spin-momentum locked spin manipulation in a two-dimensional Rashba system” M. Kohda, T. Okayasu and J. Nitta Scientific Reports,9,(2019),1909.
  • December 2018 I was awarded the RIEC Award Tohoku University Researcher of the Year. I received this award for my research on electrical spin generation and spin relaxation suppression in semiconductor quantum structures. Thank you very much for this award.
  • December 2018 (001) and (110) quantum wells, revealing the essential difference between the permanent spin-swirl states that can be realized in quantum wells Both (001) and (110) quantum wells can achieve permanent spin-turning states, although they have different surface orientations. However, we found that the lifetimes of the permanent spin-swirl states are significantly different due to the difference in the higher-order symmetry of the Dresselhaus spin-orbit interaction.。 “Robustness of a persistent spin helix against a cubic Dresselhaus field in (001) and (110) oriented two-dimensional electron gases” D Iizasa, D. Sato, K. Morita, J. Nitta, and M. Kohda, Physical Review B,98,(2018),165112.
  • July 2018 I was the recipient of the 17th Intelligent Cosmos Incentive Award. I received this award for my research on electrical spin generation and long range spin transport in semiconductor quantum structures. Thank you very much for this award.
  • April 2018 I was awarded the Young Scientist Award by the Ministry of Education, Culture, Sports, Science and Technology. I received this award for my research on spin production and spin transport using spin-orbit interaction. Thank you very much.
  • January 2018 We published a paper on spin-orbit coupling and waveguide effects in layered GaSe. We have published two papers on the evaluation of spin-orbit coupling in GaSe and the waveguide effect in layered materials. “Weak antilocalization induced by Rashba spin-orbit interaction in layered III-VI compound semiconductor GaSe thin films” S. Takasuna, J. Shiogai, S. Matsuzaka, M. Kohda, Y. Oyama,and J. Nitta Physical Review B Rapid Communications,96,(2017),161303(R). “Effect of optical waveguide on photoluminescence polarization in layered material GaSe with millimeter scale” M. Suzuki, M. Kohda, S. Takasuna, S. Matsuzaka, Y. Sato, T. Tanabe, Y. Oyama,and J. Nitta Japanese Journal of Applied Physics,57,(2018),020308.
  • July 2017 We have published a review paper on permanent spin swivel states. We summarize our previous studies on spin-orbit interactions and permanent spin rotation in semiconductors. I have written the derivation of the equation and its physical meaning so that beginners can understand it as much as possible, so I hope you will find it useful. “Physics and application of persistent spin helix state in semiconductor heterostructures” M. Kohda and G. Salis Semiconductor Science and Technology,32,(2017),073002. (
  • August 2016 We elucidated the spin relaxation mechanism of epitaxial Pt films. We have shown for the first time that the spin relaxation in epitaxial Pt films is a Dyakonov-Perel mechanism, similar to that in semiconductors. This means that electrical spin control is possible even in extremely thin metal films. “Observation of the D’yakonov-Perel’ spin relaxation in single-crystalline Pt thin films” J-C. Ryu, M. Kohda, and J. Nitta Physical Review Letters,116,(2016), 256802-1-256802-6. (doi:10.1103/PhysRevLett.116.256802)
  • July 2016 Drift spin transport in a permanent spin-turn state was realized. In the permanent spin-swirl state, the spin relaxation is suppressed and the electric field can transport spins down to 100 microns or more. The interest of the perpetual spin-swirl state, protected by internal symmetry, could be used for device applications. “Drift transport of helical spin coherence with tailored spin-orbit interactions” Y. Kunihashi, H. Sanada, H. Gotoh, K. Onomitsu, M. Kohda, J. Nitta, and T. Sogawa Nature Communications,7,(2016),10722. (doi:10.1038/ncomms10722)
  • June 2016 InGaAs quantum wells have been used to electrically control the perpetual spin rotation state and vice versa. The permanent spin-swivel state is an interesting state that allows us to realize both spin control and long-range spin transport at the same time. We can expect to realize a spin logic circuit by controlling gates in the permanent spin rotation state and its opposite state. “Gate-controlled switching between persistent and inverse persistent spin helix states” K. Yoshizumi, A. Sasaki, M. Kohda, and J. Nitta Applied Physics Letters,108,(2016),132402-1-132402-4. (doi:10.1063/1.4944931)
  • May 2016

    We have established a method to determine the bulk Dresselhaus spin-orbit interaction coefficient from the difference between the spin precession in the drift and diffusion motions.

    The electron spins feel different effective magnetic fields in drift and diffusion motions. By making good use of this, it is possible to obtain the bulk Dresselhaus spin-orbit interaction coefficient. “Current-Controlled Spin Precession of Quasistationary Electrons in a Cubic Spin-Orbit Field” P Altmann, F. G. G. Hernandez, G. J. Ferreira, M. Kohda, C. Reichl, W. Wegscheider, and G. Salis Physical Review Letters 116, 196802-1-196802-4 (2016). (doi: 10.1103/PhysRevLett.116.196802)
  • December 2015 We have realized a helical spin structure in a semiconductor by using quasi-one-dimensional confinement effects. Time- and space-resolved Kerr measurements in the fine line structure show that as the lateral confinement effect increases, the helical spin structure appears and the spin relaxation time increases. “Transition of a two-dimensional spin mode to a helical state by lateral confinement” P.Altmann, M. Kohda, C. Reichl, W. Wegscheider, and G. Salis. Physical Review B92, 235304-1-235304-6 (2015). (DOI:10.1103/PhysRevB.92.235304)
  • October 2015 We have established a method to evaluate two types of spin-orbit interactions separately using the diffusion of electrons. We have succeeded in determining the coefficients of Rashba and Dresselhaus spin-orbit coupling by means of sensitive optical detection of the effective magnetic field associated with the diffusion of electrons using time- and space-resolved Kerr measurements, summarizing our work at IBM Zurich Research Laboratory. “All-optical evaluation of spin-orbit interaction based on diffusive spin motion in a two-dimensional electron gas” M. Kohda, P Altmann, D. Schuh, S. D. Ganichev, W. Wegscheider, and G. Salis Applied Physics Letters 107, 172402 (2015). (doi: 10.1063/1.4934671)
  • May 2014 – March 2015 I have studied time-resolved spin measurement at IBM Zurich Laboratory. We have been studying spin-orbit interaction by optical measurements using time-resolved Kerr measurements. In the future, we would like to develop the study of spin-orbit interaction by combining magnetic conductivity measurements and optical measurements.
  • July 2014 We have made it possible to electrically detect the magnitude of the interaction between two types of spin orbitals using a semiconductor wire structure. When an in-plane magnetic field is applied to the wire and the direction of the in-plane magnetic field and the effective magnetic field coincide, an anisotropy in the spin relaxation time appears between the two directions. The direction of the effective magnetic field can be detected by detecting the anisotropy as magnetic conduction. A. Sasaki, S. Nonaka, Y. Kunihashi, M. Kohda, T. Bauernfeind, T. Dollinger, K. Richter, and J. Nitta. “Direct determination of spin-orbit interaction coefficients and realization of the persistent spin helix symmetry”, Nature Nanotechnology 13, 703-709 (2014).DOI: 10.1038/NNANO.2014.128
  • March 2014 I was awarded the Honda Memorial Research Encouragement Award by the Honda Memorial Foundation. The reason for the award is his research on electrical spin generation and control in semiconductors using spin-orbit interaction.
  • March 2014 An article on the Journal of the Japan Society of Applied Physics Vol. 83 “Spintronics in the Future” was published. Co-authored with Dr. Haruki Sanada, Senior Research Fellow at NTT Basic Research Laboratories, on spin filters and electron spin resonance in semiconductors.
  • October 2013 A special issue on “Recent Topics in Narrow Gap Semiconductors and Silicon Spintronics” was published in the Journal of the Magnetics Society of Japan, Magne Vol. 8. This is an article on gate control in the permanent spin swirling state in semiconductors.
  • June 2013 The article on spin production using spin-orbit interaction was published in the June issue of Solid State Physics. This is a clear explanation of the research that realized the Stern-Gerlach experiment in solids. Some of the illustrations in this book are on the cover. This is a joint research with Kyoto University, Toho University, and NTT.
  • April 2013 We have succeeded in growing perpendicularly magnetized FePd epitaxially on GaAs and InP substrates, which are widely used in semiconductors. The magnetic properties of L10-FePd/MgO change significantly between InP and GaAs substrates because of the different distortions it undergoes. The results were obtained in a joint research with Ando Laboratory, Department of Applied Physics, Tohoku University.“Structural and magentic properties of L10-FePd/MgO films on GaAs and InP lattice mismatched substrates” M. Kohda, S. Iimori, R. Ohsugi, H. Naganuma, T. Miyazaki, Y. Ando and J. Nitta Appl. Phys. Lett. 102, 102411(2013)
  • 2013年1月 A presentation on the use of quantum point contacts to generate spin-polarized currents has been uploaded to Youtube. Presentation at the Topical workshop on semiconductor spintronics at Keio University on January 24, 2013. To view it, click here.
  • August 2012 We were the first to succeed in aligning the spins of electrons without the use of ferromagnets or external magnetic fields. We have achieved the Stern-Gerlach spin separation experiment in semiconductors. “Spin-orbit induced electronic spin separation in semiconductor nanostructures” Makoto Kohda, Shuji Nakamura, Yoshitaka Nishihara, Kensuke Kobayashi, Teruo Ono, Jun-ichiro Ohe, Yasuhiro Tokura, Taiki Mineno, and Junsaku Nitta. Nature Communications 3, 1082 (2012). (doi:10.1038/ncomms2080) Click here for the press release. Using the spatial gradient of the effective magnetic field due to spin-orbit interactions, we have succeeded in separating upward and downward spins spatially and extracting only one of them (as shown in the figure below).
  • August 2012 We have succeeded in controlling the gate electric field in the electron spin permanent rotation state. Since the effective magnetic field is uniaxial, the electron spin relaxation can be completely suppressed. “Gate-controlled persistent spin helix state in (In,Ga)As quantum wells” M. Kohda, V. Lechner, Y. Kunihashi, T. Dollinger, P. Olbrich, C. Schonhuber, V. V. Bel’kov,L. E. Golub,D. Weiss,K. Richter,J. Nitta,and S. D. Ganichev. PHYSICAL REVIEW B 86,081306(R) (2012). Click here for the press release. In the spin-permanent spin state, even if the electrons are randomly scattered from each other, the spins are always in phase with each other and propagate spatially (as shown in the figure below). So the spin relaxation can be suppressed.
  • We have designed and actually realized a very large Rashba spin-orbit interaction in the InGaAsP/InGaAs two-dimensional electron gas. This is the largest value of Rashba spin-orbit interaction observed so far, obtained from weak anti-localization analysis (WAL). “Enhancement of Spin-Orbit Interaction and the Effect of Interface Diffusion in Quaternary InGaAsP/InGaAs heterostructures” M. Kohda and J.Nitta Physical Review B. 81, (2010) 115118.(DOI: 10.1103/PhysRevB.81.115118)
  • A paper describing the spin-orbit interaction as a function of quantum well width and spin interference effects has been published in Special topics in JPSJ. “Manipulating spin orbit interaction in semiconductors.” M. Kohda, T. Bergsten, and J. Nitta Journal of the Physics Society of Japan, 77(3), (2008), 031008-1-031008-9

Published Papers

Invited lecture (international conference)

  • [Invited] M. Kohda, “Spin manipulation by spin momentum locking in Rashba two-dimensional system” 2019 3rd EPiQS-TMS alliance workshop on Topological Phenomena in Quantum Materials October 23rd 2019 USCB, USA
  • [Invited] M. Kohda, “Spin manipulation by spin-momentum locking in a two-dimensional Rashba system” 2019 SPIE NanoScience and Engineering Spintronics XII August 11th 2019 San Diego, USA
  • [Invited] M. Kohda, “Spin orbit interaction in a layered semiconductor GaSe” 2018 Tohoku/SG-Spin Workshop on Spintronics February 20th-21st 2018 Sendai, Japan
  • [Invited] M. Kohda, “Spin-momentum locking on magnetic focusing manifested by semiconductor Stern-Gerlach spin filter” 2017 2nd Japan-China International Workshop on Quantum Technologies June 12th-13th 2017 Tokyo, Japan
  • [Invited] M. Kohda, “Spin relaxation mechanism in single and poly crystalline Pt thin films” 2016 14st RIEC International Workshop on Spintronics November 18th-20th 2016 Sendai, Japan
  • [Invited] M. Kohda, “Spin orbit interaction in metal-chalcogenide GaSe” 2016 International Symposium on Revolutionary Atomic-Layer Materials October 22nd-23th 2016 Sendai, Japan
  • [Invited] M. Kohda, “Spin orbit interaction in III-V semiconductor 2DEG and layered semiconductor GaSe” 2016 Frontiers in Quantum Materials and Devices Workshop (FQMD2016) June 13th-14th 2016 Wako, Japan
  • [Invited] M. Kohda, “Spin helix and inverse spin helix states for semiconductor spintronics” 2015 International Workshop on Quantum Nanostructures and Electron-Nuclear Spin Interactions October 21st-22nd 2015 Sendai, Japan
  • [Invited] M. Kohda, “Electrical spin generation and manipulation in semiconductor heterostructures” 2015 21st International Conference on Electronic Properties of Two-Dimensional Systems and 17th International Conference on Modulated Semiconductor Structures July 26-31, 2015, Sendai, Japan
  • [Invited] M. Kohda, “Spin orbit interaction in semiconductor heterostructures” 2014 SPIE Nanophotonics 2014, San Diego, August 17th – 21th (2014).
  • [Invited] M. Kohda, “Stern-Gerlach type spin separation in semiconductor nanostructures” 2014 The 41st International Sympositum on Compound Semiconductor, May. 11-15th, 2014, Montpellier, France.
  • [Invited] M. Kohda, “Spin-orbit induced spin generation in semiconductor nanostructures” 2013 Energy Materials Nanotechnology meeting, Oct. 21st-27th, 2013, Chengdu, China.
  • [Invited] M. Kohda, “Spin orbit induced electronic spin polarization and its future application” 2013 International Conference on Solid State Devices and Materials SSDM2013, Sep. 24th-28th, 2013, Fukuoka, Japan.
  • [Invited] M. Kohda, “Spin-orbit induced spin generation in InGaAs quantum wells” 2013 16th International Conference on Narrow Gap Semiconductors NGS16, August 2nd-6th, 2013, Hangzhou, China.
  • [Invited] M. Kohda, “Spin-orbit induced electronic spin separation in semiconductor nanostructures” 2013 The 18th International Conference on electron Dynamics in Semiconductor, Optoelectronics and Nanostructures EDISON18, July 22nd-26th, 2013, Matsue, Japan.
  • [Invited lecture] M. Kohda, “Spin orbit interaction and its application in semiconductors” 2013 JST-DFG ASPIMATT, July 1st-5th, 2013, Dresden, Germany.
  • [Invited] M. Kohda, “Stern-Gerlach effect and spin separation in InGaAs nanostructures” 2013 American Physics Society (APS) March meeting, March 20th, 2013, Baltimore, USA.
  • [Invited] M. Kohda, “Electrical spin separation and Stern-Gerlach effect in semiconductor nanostructures” 2012 AIMR spintronics workshop, Nov. 30th-Dec. 1st, 2012, Sendai, Japan
  • [Invited] M. Kohda, “Electrical spin generation and manipulation by spin orbit interaction in semiconductor nanostructures” 2012 The 9th RIEC International Workshop on Spintronics , May. 31st-June. 2ndt, 2012, Sendai, Japan
  • [Invited] M. Kohda, “Zero field spin polarization by Rashba spin orbit interaction in quantum point contacts” 2011 5th International Workshop on Spin Currents, July. 26th, 2011, Sendai, Japan
  • [Invited] M. Kohda, “Spin manipulation and generation with spin oribt interaction in semiconductor heterostrucutures” 2010 SPIE Photonic West, Jan.. 26th, 2010, San Francisco, USA
  • [Invited] M. Kohda, “Comparison of gate sensitivity for spin interference effect between Al2O3 and SiO2 gate insulators on InGaAs based mesoscopic ring arrays” 2008 214th Pacific rim meeting on electrochemical and solid state science, October 15th, Hawaii, USA

Invited lecture (national conference)

  • [Invited] Makoto Kohda, “Control of spin states by spin orbit interaction in semiconductors” 2018 Research Institute of Electrical Communication, Tohoku University-Information and Communications Joint Research Center-The 2017 Joint Project Research Presentation, February 22, 2018 Tohoku University.
  • [Invited] Makoto Kohda, “Control of permanent spin gyration states in semiconductor quantum structures using spin-orbit interaction,” 2017 2017 Applied Physics Society of Japan Hokkaido Branch Lecture Meeting, November 10, 2017 Hokkaido University.
  • [Invited] Makoto Kohda, “Spin Control Using Spin-Orbit Locking in Semiconductors” 2017 Tohoku University, Research Institute of Electrical Communication Joint Research Project “Construction and Device Applications for Precise Matter Science Based on Control of Charge and Spin, November 3, 2017 Sendai Moniasou .
  • [Invited] Makoto Kohda, “Generation and Control of Helical Spin Order in Semiconductors” 2017 Toyota Science Institute Workshop “Dynamic Optical Control of Spin Order, October 19, 2017 Toyota Commemorative Museum of Industry and Technology.
  • [Invited] Makoto Kohda,, “Spin Relaxation Mechanism and Spin-Orbit Torque in Epitaxial Pt and Ta Thin Films” 2017 Tohoku University Research Institute of Electrical Communication Joint Project Research Group, January 31, 2017 Tohoku University./li>
  • [Invited] Makoto Kohda, “Spin Properties in Systems with Coexisting Rashba and Dresselhaus Spin-Orbit Interactions in Semiconductors” 2017 Ministry of Education, Culture, Sports, Science and Technology (MEXT) New Academic Field “Frontier of Materials Science Spun by Topology” 8th Intensive Cooperative Research Meeting “Physics of Odd Frequency Cooper Pairs” , January 6-7, 2017 Nagoya University.
  • [Invited] Makoto Kohda, “New Developments in Spin-Orbit Interactions in Solids” 2016 10th Transdisciplinary Research Conference on Condensed Matter Science, December 9-10, 2016, Kobe University.
  • [Invited] Makoto Kohda, “Spin production and its control using spin-orbit interactions in semiconductor quantum structures” 2016 2016 Spring Physics Society of Japan, Region 8,5,3 Joint Symposium, March 20, 2016 Tohoku Gakuin University.
  • [Invited] Makoto Kohda, “Fundamentals and Applications of Spin-Orbit Interactions” 2015 14th Annual Introduction to Spintronics Seminar, December 17, 2015 Keio University.
  • [Invited] Makoto Kohda, “Spin-Orbit Interactions in Semiconductor and Metal Thin Films” 2015 Research Institute of Electrical Communication, December 5, 2015 Tohoku University.
  • [Invited] Makoto Kohda,”New Developments in Spin-Orbit Interactions in Semiconductors” 2015 172nd Spinics Research Meeting, October 2, 2015, Tohoku University.
  • [Invited]Makoto Kohda,”Electrical Spin Generation and Control of Permanent Spin Rotational States Using Spin-Orbit Interactions” 2013 Fundamentals and Applications of Semiconductor Spin Optics PASPS-18, Dec. 9th-10th, 2013, Osaka University.
  • [Invited] Makoto Kohda, “Stern-Gerlach Spin Filter with Spin-Orbit Interactions” 2013 The Magnetics Society of Japan, The 43rd Annual Meeting of the Magnetics Society of Japan, Control of Physical Properties by Electric Fields, Jan. 7th 2013, Kyoto.
  • [Invited] Makoto Kohda, “Gate Field Spin Generation and Control in Semiconductors” 2012 Autumn Meeting of the Physical Society of Japan, Region 3, 4, 7 Symposium on New Developments in Device Physics -Materials Science of Electric Field Effects-, Sep. 20h 2012, Yokohama.
  • [Invited] Makoto Kohda “Electrical Spin Generation and Control in Semiconductor Nanostructures” 2011 Dirac Electronics and Spintronics Symposium co-organized by the Department of Physics, Toho University and Center for Solid State Physics, Dec. 12th 2011, Chiba.
  • [Invited] Makoto Kohda, “Electrical Spin Generation with InGaAs Quantum Point Contacts” 2011 Central Research Institute of Electric Power Industry (CRIEPI), Institute of Materials Science (CRIEPI), Young Scientists’ Workshop: Latest Topics in Advanced Technology – Towards the Creation of New Devices, Nov. 18th 2011, Tokyo.
  • [Invited] Makoto Kohda, “Generating Spin Currents with InGaAs Quantum Point Contacts” 2011 New Phenomena of Spin Currents and Thermal Effects Jointly sponsored by the Japan Society of Applied Physics and the Magnetics Society of Japan, Nov. 15th 2011, Tokyo.
  • [Invited] Makoto Kohda, “Spin generation and detection by spin orbit interaction in semiconductors” 2011 The University of Tokyo, Center for Quantum-Phase Electronics G-COE Program – A Center of Excellence in Education and Research in Physical Chemistry, QPEC Seminar, Aug. 13th 2011, Tokyo.
  • [Invited] Makoto Kohda, “Spin Control and Spin Production through Semiconductor Spin-Orbit Interactions” 2011 1st “Progress in Physics and Applications of Electric Field Effects in Solid Materials”, Mar. 4th 2011, Tokyo.
  • [Invited] Makoto Kohda, “Three-terminal device spin injection using GaMnAs/n+-GaAs tunnel junctions.” 2006 Symposium of the 53rd Annual Meeting of the Japan Society for Applied Physics and Related Societies, Mar. 22nd 2006, Kanagawa.
  • [Invited]Makoto Kohda, “Spin Injection into Semiconductors” 2004 The 59th Annual Meeting of the Physical Society of Japan, Region 3 Symposium, Mar. 27th 2004, Fukuoka.

Research Grants

  • 2019 Challenging Research DUO for the Creation of a New Domain
  • 2018 Intelligent Cosmos Incentive Award
  • 2016 Tohoku University Strategic Research Startup Support Program
  • 2015- Research Costs Research in New Academic Fields (Research Co-Sponsor)(No.15H05854)
  • 2015- Research Fees Base (A)(No.15H02099)
  • 2013-2014 Research expenses The germ of the challenge (No.25600011)
  • 2012-2014 Grant-in-Aid Young Scientists (A)(No.24684019)
  • 2011-2015 New Energy and Industrial Technology Development Organization (NEDO) Young Grants
  • 2011 Japan Science and Technology Agency Research Seeds Search Program
  • 2011 Research Center for Semiconductor Science and Engineering, STARC Research Grant
  • 2009-2013 Maekawa Houonkai Academic Research Grant
  • 2009-2010 Grant-in-Aid Young Scientists (B) (No.21760002)
  • 2008 Sumitomo Foundation Basic Science Research Grant
  • 2008-2012 JST, Japan Science and Technology Agency, “Structure and Control of the Interface”.
  • 2007 Casio Science and Technology Promotion Foundation Research Grant
  • 2007 Tohoku University Budding Researchers Development Program
  • 2007-2009 Ministry of Internal Affairs and Communications Strategic Information and Communications R&D Promotion Program (Young ICT Researchers Training Program)
  • 2007 Ikeya Foundation for Science and Technology Research Grant
  • 2006 Murata Science Foundation Research Grant
  • 2006-2007 Grants-in-Aid Young Scientists(B)(No.18760003)
  • 2002-2005 Research Fellow of the Japan Society for the Promotion of Science (DC1)


  • 2020 The 14th Aoba Society for the Promotion of Engineering Award
  • 2020 78th Annual Achievement Award of the Institute of Metals
  • 2018 The 8th RIEC Award for Researchers at Tohoku University
  • 2018 The 17th Intelligent Cosmos Incentive Award
  • 2018 The Young Scientists’ Prize by the Ministry of Education, Culture, Sports, Science and Technology
  • 2018 Graduate School of Engineering, Tohoku University Special Education Award for Graduate School of Engineering
  • 2017 The 14th Japan Institute of Metals Murakami Award for Encouragement
  • 2014 35th Honda Memorial Association Honda Memorial Encouragement Award
  • 2010 The Honda Memorial Society’s 50th Harada Research Encouragement Award
  • 2010 20th Tokin Foundation for the Promotion of Science and Technology Research Award
  • 2006 Research Encouragement Award, Aoba Foundation for the Promotion of Engineering, 2006
  • 2005 Tohoku University Electrical and Information Systems Excellence Award
  • 2001 12th Applied Physics Conference Presentation Award
  • 2001 IEICE Tohoku Branch Student Incentive Award