Amplification of spin-current polarization

被引：25
|
作者：
Saha, D. [1 ]
Holub, M. [1 ]
Bhattacharya, P. [1 ]
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 07期
关键词：
D O I：
10.1063/1.2772660
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A ferromagnet/semiconductor based electrically controlled spin-current amplifier using a dual-drain nonlocal lateral spin valve is demonstrated. The spin polarization injected by the source into the channel is amplified at the second drain contact. An amplified current spin polarization of 100% is measured. The controlled variation of amplifier gain with bias is also demonstrated. The observations are explained in the framework of the spin drift-diffusion model. (C) 2007 American Institute of Physics.
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页数：3
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