Measurement of spin-dependent conductivities in a two-dimensional electron gas

被引：3

作者：

Ebrahimnejad, H. ^{[1
]}

Ren, Y. ^{[1
]}

Frolov, S. M. ^{[1
,2
]}

Adagideli, I. ^{[3
]}

Folk, J. A. ^{[1
]}

Wegscheider, W. ^{[4
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

[2] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands

[3] Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey

[4] ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

MAGNETIC-FIELD; INJECTION; TRANSPORT;

D O I：

10.1103/PhysRevB.82.041305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin accumulation is generated by injecting an unpolarized charge current into a channel of GaAs two-dimensional electron gas subject to an in-plane magnetic field, then measured in a nonlocal geometry. Unlike previous measurements that have used spin-polarized nanostructures, here the spin accumulation arises simply from the difference in bulk conductivities for spin-up and spin-down carriers. Comparison to a diffusive model that includes spin subband splitting in magnetic field suggests a significantly enhanced electron spin susceptibility in the two-dimensional electron gas.

引用

页数：4

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