Polarized interacting exciton gas in quantum wells and bulk semiconductors

被引：51

作者：

FernandezRossier, J ^{[1
]}

Tejedor, C ^{[1
]}

Munoz, L ^{[1
]}

Vina, L ^{[1
]}

机构：

[1] UNIV AUTONOMA MADRID,DEPT FIS MAT,MADRID 28049,SPAIN

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.54.11582

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We develop a theory to calculate exciton binding energies of both two- and three-dimensional spin polarized exciton gases within a mean held approach. Our method allows the analysis of recent experiments showing the importance of the polarization and intensity of the excitation light on the exciton luminescence of GaAs quantum wells. We study the breaking of the spin degeneracy observed at high exciton density (5 x 10(10) cm(2)). Energy level splitting between spin +1 and spin -1 is shown to be due to many-body interexcitonic exchange while the spin relaxation time is controlled by intraexciton exchange.

引用

页码：11582 / 11591

页数：10

共 39 条

[1] ENHANCED EXCITON BLUE-SHIFT IN SPIN-POLARIZED DENSE EXCITON SYSTEM IN QUANTUM-WELLS [J].

AMAND, T ;

MARIE, X ;

BAYLAC, B ;

DAREYS, B ;

BARRAU, J ;

BROUSSEAU, M ;

PLANEL, R ;

DUNSTAN, DJ .

PHYSICS LETTERS A, 1994, 193 (01) :105-110

[2]

[Anonymous], 1986, Quantum Statistics of Charged Particle Systems

[3]

BASSANI F, 1975, ELECTRONIC STATES OP

[4] EXCITON BINDING-ENERGY IN QUANTUM WELLS [J].

BASTARD, G ;

MENDEZ, EE ;

CHANG, LL ;

ESAKI, L .

PHYSICAL REVIEW B, 1982, 26 (04) :1974-1979

[5]

Bastard Gerald, 1988, Wave mechanics applied to semiconductor heterostructures

[6] EXCITON SPIN RELAXATION IN THE 2D DENSE EXCITONIC PHASE - THE ROLE OF EXCHANGE INTERACTION [J].

BAYLAC, B ;

AMAND, T ;

BROUSSEAU, M ;

MARIE, X ;

DAREYS, B ;

BACQUET, G ;

BARRAU, J ;

PLANEL, R .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1995, 10 (03) :295-301

[7]

Bir G. L., 1976, SOV PHYS JETP, V42, P705

[8]

Cohen-Tannoudji C., 1977, QUANTUM MECH

[9] EXCITON BOSE CONDENSATION - THE GROUND-STATE OF AN ELECTRON-HOLE GAS .1. MEAN FIELD DESCRIPTION OF A SIMPLIFIED MODEL [J].

COMTE, C ;

NOZIERES, P .

JOURNAL DE PHYSIQUE, 1982, 43 (07) :1069-1081

[10]

COMTE C, 1982, J PHYS, V43, P1082

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