RESEARCH

I have studied electrical spin generation, manipulation and detection by using spin-orbit interaction in III-V semiconductor heterostructures. Since spin-orbit interaction acts as an effective magnetic field for electron spins, we can control spin states without using external magnetic fields and magnetic materials. In this project, we will research spin functionalities by using the spin-orbit interaction in semiconductor mesoscopic devices.

EDUCATION

2001

B.Sc. in Electrical engineering, Tohoku University

2002

M.S. in Electrical engineering, Tohoku University

2005

Ph.D. in Electrical engineering, Tohoku University

PROFESSIONAL EXPERIENCE

2003

-2005 Research Fellowship for Young Scientists, Japan Society for the Promotion of Science

2005

-2007 Research Associate, School of Engineering, Tohoku University

2007

-2010 Assistant Professor, School of Engineering, Tohoku University

2008

Researcher, Japan Science and Technology Agency

2010

-Present Associate Proffesor, Department of Materials Science, Tohoku University

HONORS AND AWARDS

2002

Japan Society of Applied Physics presentation award

2006

A research encouragement awardin Aoba foundation

2010

A research encouragement awardin Tokin foundation

2018

The Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan in 2018.

SELECTION OF PUBLICATIONS

"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, 10722-1-6 (Mar. 2016).
DOI: 10.1038/ncomms10722

"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, 172402-1-5 (Oct. 2015).
DOI: 10.1063/1.4934671

"Direct determination of spin-orbit interaction coefficients and realization of the persistent spin helix symmetry"
A. Sasaki, S. Nonaka, Y. Kunihashi, M. Kohda, T. Bauernfeind, T. Dollinger, K. Richter, and J. Nitta
Nature Nanotechnology 13 703-1-7, (Jul. 2014) .
DOI: 10.1038/NNANO.2014.128

"Spin orbit induced electronic spin separation in semiconductor nanostructures"
M. Kohda, S. Nakamura, Y. Nishihara, K. Kobayashi, T. Ono, J. Ohe, Y. Tokura, T. Mineno, and J. Nitta.
Nature Communications 3 1082-1-8, (Sep. 2012).
DOI: 10.1038/ncomms2080

"Gate-controlled persistent spin helix state in (In,Ga)As quantum wells"
M. Kohda, V. Lechner, Y. Kunihashi, T. Dollinger, P. Olbrich, C. Schönhuber, I. Caspers, V. V. Bel'kov, L. E. Golub, D. Weiss, K. Richter, J. Nitta, and S. D. Ganichev.
Physical Review B Rapid Communication 86, 081306(R)-1-5 (Aug. 2012) .
DOI: 10.1103/PhysRevB.86.081306

"Enhancement of spin orbit interaction and the effect of interface diffusion in InGaAsP/InGaAs heterostructures"
M. Kohda and J. Nitta,
Physical Review B 81, 115118-1-8 (mar. 2010).
DOI: 10.1103/PhysRevB.81.115118

"A spin Esaki diode",
M. Kohda, Y. Ohno, K. Takamura, F. Matsukura, and H. Ohno.
Japanese Journal of Applied Physics 40 (Express Letter), L1274-L1276 (Oct. 2001).
DOI: 10.1143/JJAP.40.L1274