Volume 82, Number 6, June 2008
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||03 June 2008|
Temperature dependence of the intrinsic spin Hall effect in Rashba spin-orbit coupled systems
School of Physics, Peking University - Beijing 100871, China
2 School of Engineering Physics, University of Wollongong - New South Wales 2552, Australia
Corresponding author: email@example.com
Accepted: 29 April 2008
We investigate the temperature dependence of the intrinsic charge and spin transport in two-dimensional semiconductors with Rashba spin-orbit coupling. For 2α kF0-2mα2/2 < ω < 2α kF0+2mα2/2 (where α is the Rashba spin-orbit coupling parameter), the real part of the optical conductivity (σR(ω)) and the imaginary part of the spin Hall conductivity (σIsH(ω)) decrease with temperature monotonically. Outside this frequency range, σR(ω) and σIsH(ω) exhibit resonant behavior. At high frequencies, σRsH(ω) changes sign at a characteristic temperature T1. Our result suggests that the sign and magnitude of σRsH(ω) can be tuned by changing the temperature.
PACS: 71.10.Ca – Electron gas, Fermi gas / 72.25.-b – Spin polarized transport / 73.23.-b – Electronic transport in mesoscopic systems
© EPLA, 2008
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