Spins free of charge: All-optical control of spin in GaAs

被引：0
|
作者：
van Driel, HM
Kerachian, Y
Bhat, R
Sipe, JE
Stevens, M
Smirl, AL
机构：
[1] Univ Toronto, Dept Phys, Toronto, ON, Canada
[2] Univ Iowa, Lab Adv Quantum Elect, Iowa City, IA USA
来源：
COMPOUND SEMICONDUCTORS 2004, PROCEEDINGS | 2005年 / 184卷
关键词：
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Quantum interference of single and two-photon absorption between valence and conduction band states in a III-V semiconductor allows one to generate spin currents with or without charge currents in the absence of any external bias applied to the system. The underlying principles for these generation processes are outlined. We offer experimental demonstration of pure spin currents in GaAs excited by 1550 and 775 nm, 150 fs pulses at room temperature.
引用
收藏
页码：139 / 144
页数：6
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