OBSERVATION OF EXTREMELY LONG ELECTRON-SPIN-RELAXATION TIMES IN P-TYPE DELTA-DOPED GAAS/ALXGA1-XAS DOUBLE HETEROSTRUCTURES

被引：71

作者：

WAGNER, J ^{[1
]}

SCHNEIDER, H ^{[1
]}

RICHARDS, D ^{[1
]}

FISCHER, A ^{[1
]}

PLOOG, K ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.47.4786

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-relaxation dynamics of electrons have been studied in p-type delta-doped GaAs:Be/AlxGa1-xAs double heterostructures by time-resolved photoluminescence polarization measurements. A relaxation time of congruent-to 20 ns has been observed which is two orders of magnitude longer than that reported for corresponding acceptor concentrations in homogeneously doped GaAs. This enhancement, which arises from a drastic reduction of the electron-hole wave-function overlap, demonstrates that electron-hole scattering with a simultaneous exchange interaction dominates spin relaxation at low temperatures.

引用

页码：4786 / 4789

页数：4

共 14 条

[11] FINE-STRUCTURE OF QUANTUM WELL EXCITONS [J].

ROSSLER, U ;

JORDA, S ;

BROIDO, D .

SOLID STATE COMMUNICATIONS, 1990, 73 (03) :209-214

[12] TIME-RESOLVED MEASUREMENT OF THE ELECTRON-SPIN RELAXATION KINETICS IN GAAS [J].

SEYMOUR, RJ ;

ALFANO, RR .

APPLIED PHYSICS LETTERS, 1980, 37 (02) :231-233

[13] 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

[14] SPIN-LATTICE RELAXATION IN P-TYPE GALLIUM-ARSENIDE SINGLE-CRYSTALS [J].

ZERROUATI, K ;

FABRE, F ;

BACQUET, G ;

BANDET, J ;

FRANDON, J ;

LAMPEL, G ;

PAGET, D .

PHYSICAL REVIEW B, 1988, 37 (03) :1334-1341

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