Electron spindynamics in InGaAs quantum wells

被引：9

作者：

Morita, K ^{[1
]}

Sanada, H ^{[1
]}

Matsuzaka, S ^{[1
]}

Hu, CY ^{[1
]}

Ohno, Y ^{[1
]}

Ohno, H ^{[1
]}

机构：

[1] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2004年 / 21卷 / 2-4期

关键词：

electron spin; InGaAs/AlGaAs QWs; spin relaxation; electron g-factor;

D O I：

10.1016/j.physe.2003.11.160

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electron spin dynamics in strained In0.1Ga0.9As/Al0.4Ga0.6As quantum wells (QWs) on (100) and (110)-oriented substrates are investigated by time-resolved Faraday rotation. We find that the spin relaxation time in (I 10) QWs is 6 times longer than that in (100) QWs, at low temperatures, which is strongly reduced-by applying magnetic fields. The sign of g-factor is found positive and its magnitude decreases with increasing well width, in the well width range investigated here. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1007 / 1011

页数：5

共 17 条

[1] Spin relaxation in n-modulation doped GaAs/AlGaAs (110) quantum wells [J].

Adachi, T ;

Ohno, Y ;

Matsukura, F ;

Ohno, H .

PHYSICA E, 2001, 10 (1-3) :36-39

[2]

Dyakonov M. I., 1972, SOV PHYS-SOLID STATE, V13, P3023

[3]

DYAKONOV MI, 1971, SOV PHYS JETP-USSR, V33, P1053

[4]

DYAKONOV MI, 1986, SOV PHYS SEMICOND+, V20, P110

[5]

HANNAK RM, 1995, SOLID STATE COMMUN, V93, P313, DOI 10.1016/0038-1098(94)00784-5

[6] QUANTUM BEATS OF ELECTRON LARMOR PRECESSION IN GAAS WELLS [J].

HEBERLE, AP ;

RUHLE, WW ;

PLOOG, K .

PHYSICAL REVIEW LETTERS, 1994, 72 (24) :3887-3890

[7]

IVCHENKO EL, 1992, SOV PHYS SEMICOND+, V26, P827

[8] Resonant spin amplification in n-type GaAs [J].

Kikkawa, JM ;

Awschalom, DD .

PHYSICAL REVIEW LETTERS, 1998, 80 (19) :4313-4316

[9] Conduction band spin splitting in InxGa1-xAs/GaAs quantum wells [J].

Kowalski, B ;

Zwiller, V ;

Wiggren, C ;

Varekamp, PR ;

Miller, MS ;

Pistol, ME ;

Omling, P ;

Samuelson, L .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1998, 37 (08) :4272-4276

[10] Larmor beats and conduction electron g factors in InxGa1-xAs/GaAs quantum wells [J].

Malinowski, A ;

Guerrier, DJ ;

Traynor, NJ ;

Harley, RT .

PHYSICAL REVIEW B, 1999, 60 (11) :7728-7731

← 1 2 →