Anomalous photogalvanic effect of circularly polarized light incident on the two-dimensional electron gas in Al{x}Ga{1-x}N/GaN heterostructures at room temperature.
Under normal incidence of circularly polarized light at room temperature, a charge current with swirly distribution has been observed in the two-dimensional electron gas in Al{0.25}Ga{0.75}N/GaN heterostructures. We believe that this anomalous charge current is produced by a radial spin current via the reciprocal spin Hall effect. It suggests a new way to research the reciprocal spin Hall effect and spin current on the macroscopic scale and at room temperature.
He
X W
XW
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
Shen
B
B
Chen
Y H
YH
Zhang
Q
Q
Han
K
K
Yin
C M
CM
Tang
N
N
Xu
F J
FJ
Tang
C G
CG
Yang
Z J
ZJ
Qin
Z X
ZX
Zhang
G Y
GY
Wang
Z G
ZG