MAGNETOOPTICAL SPECTROSCOPY OF POSITIVELY CHARGED EXCITONS IN GAAS QUANTUM-WELLS

被引：133

作者：

SHIELDS, AJ ^{[1
]}

OSBORNE, JL ^{[1
]}

SIMMONS, MY ^{[1
]}

PEPPER, M ^{[1
]}

RITCHIE, DA ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, CAVENDISH LAB, CAMBRIDGE CB3 0HE, ENGLAND

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.52.R5523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report observation of positively charged excitons (X(+)) in GaAs quantum wells remotely doped with accepters. Upon reducing the excess hole density, by photoexciting carriers in the doped barrier layer, we observe the neutral excitonic transition strengthen relative to X(+). Further confirmation of the X(+) assignment is provided by its temperature and magnetic-field dependence. We observe both the antisymmetric (singlet) and symmetric (triplet) X(+) spin states.

引用

页码：R5523 / R5526

页数：4

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