Suppression of electron spin relaxation in a wide GaAs/AlGaAs quantum well with a lateral confining potential

被引：1

作者：

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

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

Il'in, A. I. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[2] Russian Acad Sci, Inst Microelect Technol & Ultrahighpur Mat, Chernogolovka 142432, Russia

来源：

SOLID STATE COMMUNICATIONS | 2012年 / 152卷 / 20期

基金：

俄罗斯基础研究基金会;

关键词：

Quantum wells; Semiconductors; Spin dynamics; Time-resolved optical spectroscopies; CHANNELS;

D O I：

10.1016/j.ssc.2012.08.005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Coherent spin dynamics of electrons laterally confined in a wide GaAs quantum well using a special mosaic electrode deposited onto the sample plane has been investigated. Electron spin lifetime measurements have been carried out in structures with different sizes of orifices in the mosaic electrode using the time-resolved Kerr rotation technique. It has been found that the electron spin lifetime in the lateral traps increases significantly with decreasing orifice size in the mosaic electrode. The observed electron spin lifetime dependence can be interpreted in terms of D'yakonov-Perel' spin relaxation mechanism suppression. (c) 2012 Published by Elsevier Ltd.

引用

页码：1893 / 1895

页数：3

共 15 条

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

Averkiev, N. S. ;

Golub, L. E. ;

Gurevich, A. S. ;

Evtikhiev, V. P. ;

Kochereshko, V. P. ;

Platonov, A. V. ;

Shkolnik, A. S. ;

Efimov, Yu. P. .

PHYSICAL REVIEW B, 2006, 74 (03)

[2]

Cherbunin R.V., 2009, FIZ TVERD TELA, V51, P791

[3]

D'yakonov M. I., 1971, Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, V60, P1954

[4] ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR [J].

DATTA, S ;

DAS, B .

APPLIED PHYSICS LETTERS, 1990, 56 (07) :665-667

[5] Fine structure of exciton excited levels in a quantum dot with a magnetic ion [J].

Glazov, M. M. ;

Ivchenko, E. L. ;

Besombes, L. ;

Leger, Y. ;

Maingault, L. ;

Mariette, H. .

PHYSICAL REVIEW B, 2007, 75 (20)

[6] Dimensionally constrained D'yakonov-Perel' spin relaxation in n-InGaAs channels: transition from 2D to 1D [J].

Holleitner, A. W. ;

Sih, V. ;

Myers, R. C. ;

Gossard, A. C. ;

Awschalom, D. D. .

NEW JOURNAL OF PHYSICS, 2007, 9

[7] Coherent spin manipulation without magnetic fields in strained semiconductors [J].

Kato, Y ;

Myers, RC ;

Gossard, AC ;

Awschalom, DD .

NATURE, 2004, 427 (6969) :50-53

[8] Progressive suppression of spin relaxation in two-dimensional channels of finite width [J].

Kiselev, AA ;

Kim, KW .

PHYSICAL REVIEW B, 2000, 61 (19) :13115-13120

[9] Time-resolved studies of electron and hole spin dynamics in modulation-doped GaAs/AlGaAs quantum wells [J].

Korn, T. .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2010, 494 (05) :415-445

[10] Control of electron spin dynamics in a wide GaAs quantum well by a lateral confining potential [J].

Larionov, A. V. ;

Sekretenko, A. V. ;

Il'in, A. I. .

JETP LETTERS, 2011, 93 (05) :269-274

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