TIME-RESOLVED SPIN-POLARIZATION SPECTROSCOPY IN GAAS/ALGAAS QUANTUM-WELLS

被引：46
作者：
ROUSSIGNOL, P
ROLLAND, P
FERREIRA, R
DELALANDE, C
BASTARD, G
VINATTIERI, A
CARRARESI, L
COLOCCI, M
ETIENNE, B
机构：
[1] UNIV FLORENCE,DIPARTIMENTO FIS,I-50125 FLORENCE,ITALY
[2] UNIV FLORENCE,LENS,I-50125 FLORENCE,ITALY
[3] LAB MICROSTRUCT & MICROELECTR,F-92220 BAGNEUX,FRANCE
来源：
SURFACE SCIENCE | 1992年 / 267卷 / 1-3期
关键词：
D O I：
10.1016/0039-6028(92)91154-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present a study of spin relaxation of excitons in a set of nominally undoped GaAs/AlGaAs quantum well (QW) structures by using time-resolved photoluminescence techniques. The initial polarization and the spin relaxation time have been measured varying the excitation energy between the heavy- and light-hole exciton of each well, at a temperature of 4 K. Typical spin relaxation times in the 50-120 ps range are found when increasing the well width from 25 to 90 angstrom; however no dependence of the spin relaxation time on the excitation wavelength has been observed.
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页码：360 / 364
页数：5
相关论文
共 8 条
[1]   SPIN-FLIP SCATTERING TIMES IN SEMICONDUCTOR QUANTUM-WELLS [J].
BASTARD, G ;
FERREIRA, R .
SURFACE SCIENCE, 1992, 267 (1-3) :335-341
[2]  
DYAKONOV MI, 1986, SOV PHYS SEMICOND+, V20, P110
[3]  
DYAKONOV MI, 1971, ZH EKSP TEOR FIZ, V33, P1053
[4]  
FREEMAN MR, 1990, APPL PHYS LETT, V55, P704
[5]   LUMINESCENCE STUDIES OF OPTICALLY PUMPED QUANTUM WELLS IN GAAS-ALXGA1-XAS MULTILAYER STRUCTURES [J].
MILLER, RC ;
KLEINMAN, DA ;
NORDLAND, WA ;
GOSSARD, AC .
PHYSICAL REVIEW B, 1980, 22 (02) :863-871
[6]   TIME-RESOLVED MEASUREMENT OF THE ELECTRON-SPIN RELAXATION KINETICS IN GAAS [J].
SEYMOUR, RJ ;
ALFANO, RR .
APPLIED PHYSICS LETTERS, 1980, 37 (02) :231-233
[7]   DIRECT OBSERVATION OF PICOSECOND SPIN RELAXATION OF EXCITONS IN GAAS/ALGAAS QUANTUM-WELLS USING SPIN-DEPENDENT OPTICAL NONLINEARITY [J].
TACKEUCHI, A ;
MUTO, S ;
INATA, T ;
FUJII, T .
APPLIED PHYSICS LETTERS, 1990, 56 (22) :2213-2215
[8]   HOLE RELAXATION AND LUMINESCENCE POLARIZATION IN DOPED AND UNDOPED QUANTUM-WELLS [J].
UENOYAMA, T ;
SHAM, LJ .
PHYSICAL REVIEW LETTERS, 1990, 64 (25) :3070-3073
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