Experimental separation of Rashba and Dresselhaus spin splittings in semiconductor quantum wells

被引：316

作者：

Ganichev, SD ^{[1
]}

Bel'kov, VV

Golub, LE

Ivchenko, EL

Schneider, P

Giglberger, S

Eroms, J

De Boeck, J

Borghs, G

Wegscheider, W

Weiss, D

Prettl, W

机构：

[1] Univ Regensburg, Fak Phys, D-93040 Regensburg, Germany

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[3] IMEC, B-3001 Louvain, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 25期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.256601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements on n-type InAs QWs containing a two-dimensional electron gas (2DEG). This novel technique makes use of the angular distribution of the spin-galvanic effect at certain directions of spin orientation in the plane of a QW. The ratio of the relevant Rashba and Dresselhaus coefficients can be deduced directly from experiment and does not relay on theoretically obtained quantities. Thus our experiments open a new way to determine the different contributions to spin-orbit coupling.

引用

页码：256601 / 1

页数：4

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