Optically injected spin currents in semiconductors

被引：182

作者：

Bhat, RDR ^{[1
]}

Sipe, JE ^{[1
]}

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.85.5432

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that quantum interference of one and two photon absorption from a two color field allows one to optically inject ballistic spin currents in unbiased semiconductors. The spin currents can be generated with or without an accompanying electrical current and can be controlled using the relative phase of the two colors. We characterize the injected spin currents using symmetry arguments and an eight-band Kane model.

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页码：5432 / 5435

页数：4

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