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 [J].

Averkiev, NS ;

Golub, LE ;

Willander, M .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (12) :R271-R283

[2] Giant spin relaxation anisotropy in zinc-blende heterostructures [J].

Averkiev, NS ;

Golub, LE .

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 [J].

Döhrmann, S ;

Hägele, D ;

Rudolph, J ;

Bichler, M ;

Schuh, D ;

Oestreich, M .

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 [J].

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 .

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

← 1 2 →