Spin-relaxation anisotropy in asymmetrical (001) AlxGa1-xAs quantum wells from Hanle-effect measurements:: Relative strengths of Rashba and Dresselhaus spin-orbit coupling

被引：93

作者：

Averkiev, N. S. ^{[1
]}

Golub, L. E. ^{[1
]}

Gurevich, A. S. ^{[1
]}

Evtikhiev, V. P. ^{[1
]}

Kochereshko, V. P. ^{[1
]}

Platonov, A. V. ^{[1
]}

Shkolnik, A. S. ^{[1
]}

Efimov, Yu. P. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.74.033305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-relaxation times of two-dimensional electrons in asymmetrical (001) AlGaAs quantum wells are measured by means of Hanle effect. Three different spin-relaxation times for spins oriented along [110], [1 (1) over bar0], and [001] crystallographic directions are extracted demonstrating anisotropy of the D'yakonov-Perel' spin relaxation mechanism. The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well structures are obtained. It is shown that the Rashba spin-orbit splitting is about four times stronger than the Dresselhaus splitting in the studied structure.

引用

页数：4

共 19 条

[1] Spin relaxation anisotropy in two-dimensional semiconductor systems
Averkiev, NS
Golub, LE
Willander, M
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (12) : R271 - R283
[2] Giant spin relaxation anisotropy in zinc-blende heterostructures
Averkiev, NS
Golub, LE
[J]. PHYSICAL REVIEW B, 1999, 60 (23): : 15582 - 15584
[3] AVERKIEV NS, 2002, FIZ TEKH POLUPROV, V36, P97
[4] Awschalom DD, 2002, NANOSCI TECHNOL, P147
[5] BYCHKOV YA, 1984, JETP LETT+, V39, P78
[6] Anomalous spin dephasing in (110) GaAs quantum wells:: Anisotropy and intersubband effects -: art. no. 147405
Döhrmann, S
Hägele, D
Rudolph, J
Bichler, M
Schuh, D
Oestreich, M
[J]. PHYSICAL REVIEW LETTERS, 2004, 93 (14) : 147405 - 1
[7] DYAKONOV MI, 1986, FIZ TEKH POLUPROV, V20, P178
[8] Experimental separation of Rashba and Dresselhaus spin splittings in semiconductor quantum wells
Ganichev, SD
Bel'kov, VV
Golub, LE
Ivchenko, EL
Schneider, P
Giglberger, S
Eroms, J
De Boeck, J
Borghs, G
Wegscheider, W
Weiss, D
Prettl, W
[J]. PHYSICAL REVIEW LETTERS, 2004, 92 (25) : 256601 - 1
[9] HALLSTEIN S, 1997, HIGH MAGNETIC FIELDS, V2, P593
[10] Ivchenko E. L., 2005, Optical Spectroscopy of Semiconductor Nanostructures

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