Magnetooptical studies of a single quantum dot: Excited states and spin flip of excitons

被引：63

作者：

Heller, W

Bockelmann, U

机构：

[1] Walter Schottky Institut, Technische Universität München, 85748 Garching, Am Coulombwall

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.55.R4871

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on microphotoluminescence experiments in magnetic fields on single quantum dots formed by width fluctuations in a narrow GaAs/AlxGa1-xAs quantum well. The ground state as well as two excited states are discussed. We find a different diamagnetic shift and Zeeman spin splitting for these states. Resonantly exciting zero-dimensional excitons, we observe a strong magnetic-field dependence of the spin flip rates.

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页码：R4871 / R4874

页数：4

相关论文

共 15 条

[1] THEORY OF MAGNETOEXCITONS IN QUANTUM WELLS [J].

BAUER, GEW ;

ANDO, T .

PHYSICAL REVIEW B, 1988, 37 (06) :3130-3133

[2] EXCITON MIXING IN QUANTUM WELLS [J].

BAUER, GEW ;

ANDO, T .

PHYSICAL REVIEW B, 1988, 38 (09) :6015-6030

[3] PHONON-SCATTERING BETWEEN ZERO-DIMENSIONAL ELECTRONIC STATES - SPATIAL VERSUS LANDAU QUANTIZATION [J].

BOCKELMANN, U .

PHYSICAL REVIEW B, 1994, 50 (23) :17271-17279

[4] Time resolved spectroscopy of single quantum dots: Fermi gas of excitons? [J].

Bockelmann, U ;

Roussignol, P ;

Filoramo, A ;

Heller, W ;

Abstreiter, G ;

Brunner, K ;

Bohm, G ;

Weimann, G .

PHYSICAL REVIEW LETTERS, 1996, 76 (19) :3622-3625

[5] EXCITON RELAXATION AND RADIATIVE RECOMBINATION IN SEMICONDUCTOR QUANTUM DOTS [J].

BOCKELMANN, U .

PHYSICAL REVIEW B, 1993, 48 (23) :17637-17640

[6] SHARP-LINE PHOTOLUMINESCENCE OF EXCITONS LOCALIZED AT GAAS/ALGAAS QUANTUM-WELL INHOMOGENEITIES [J].

BRUNNER, K ;

ABSTREITER, G ;

BOHM, G ;

TRANKLE, G ;

WEIMANN, G .

APPLIED PHYSICS LETTERS, 1994, 64 (24) :3320-3322

[7] SHARP-LINE PHOTOLUMINESCENCE AND 2-PHOTON ABSORPTION OF ZERO-DIMENSIONAL BIEXCITONS IN A GAAS/ALGAAS STRUCTURE [J].

BRUNNER, K ;

ABSTREITER, G ;

BOHM, G ;

TRANKLE, G ;

WEIMANN, G .

PHYSICAL REVIEW LETTERS, 1994, 73 (08) :1138-1141

[8]

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

[9] Fine structure splitting in the optical spectra of single GaAs quantum dots [J].

Gammon, D ;

Snow, ES ;

Shanabrook, BV ;

Katzer, DS ;

Park, D .

PHYSICAL REVIEW LETTERS, 1996, 76 (16) :3005-3008

[10] EXCITONS IN A PARABOLIC QUANTUM DOT IN MAGNETIC-FIELDS [J].

HALONEN, V ;

CHAKRABORTY, T ;

PIETILAINEN, P .

PHYSICAL REVIEW B, 1992, 45 (11) :5980-5985