TY - JOUR
T1 - Theoretical study on slit experiments in Rashba electron systems
AU - Shimizu, Kotaro
AU - Mochizuki, Masahito
N1 - Funding Information:
This work was partly supported by Japan Society for the Promotion of Science KAKENHI Grants No. 17H02924, No. 16H06345, No. 19H00864, and No. 19K21858 and by Waseda University Grant for Special Research Projects (Project No. 2019C-253).
PY - 2020/1/13
Y1 - 2020/1/13
N2 - We develop a theory of designing slit experiments in two-dimensional electron systems with the Rashba spin-orbit interaction. By investigating the spatiotemporal dynamics of electrons passing through a single slit or a double slit both analytically and numerically, we find that the interference fringes of the electron probability density attain specific spin orientations via the precession of spins around effective magnetic fields mediated by the Rashba spin-orbit interaction the directions of which are determined by the propagation path. The spin orientations of the fringes can be controlled by tuning the Rashba spin-orbit parameter, which can be achieved by applying an electric gate voltage. This phenomenon can be exploited to implement electrically tunable transmission of spin information and to generate spin-polarized currents.
AB - We develop a theory of designing slit experiments in two-dimensional electron systems with the Rashba spin-orbit interaction. By investigating the spatiotemporal dynamics of electrons passing through a single slit or a double slit both analytically and numerically, we find that the interference fringes of the electron probability density attain specific spin orientations via the precession of spins around effective magnetic fields mediated by the Rashba spin-orbit interaction the directions of which are determined by the propagation path. The spin orientations of the fringes can be controlled by tuning the Rashba spin-orbit parameter, which can be achieved by applying an electric gate voltage. This phenomenon can be exploited to implement electrically tunable transmission of spin information and to generate spin-polarized currents.
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U2 - 10.1103/PhysRevB.101.045301
DO - 10.1103/PhysRevB.101.045301
M3 - Article
AN - SCOPUS:85078341175
VL - 101
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 4
M1 - 045301
ER -