Definitive observation of the dark triplet ground state of charged excitons in high magnetic fields

被引：30

作者：

Astakhov, GV ^{[1
]}

Yakovlev, DR

Rudenkov, VV

Christianen, PCM

Barrick, T

Crooker, SA

Dzyubenko, AB

Ossau, W

Maan, JC

Karczewski, G

Wojtowicz, T

机构：

[1] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany

[2] Russian Acad Sci, St Petersburg 194021, Russia

[3] Radboud Univ Nijmegen, High Field Magnet Lab, NL-6525 ED Nijmegen, Netherlands

[4] Natl High Magnet Field Lab, Los Alamos, NM 87545 USA

[5] Calif State Univ Bakersfield, Dept Phys, Bakersfield, CA 93311 USA

[6] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 20期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.71.201312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ground state of negatively charged excitons (trions) in high magnetic fields is shown to be a dark triplet state, confirming long-standing theoretical predictions. Photoluminescence (PL), reflection, and PL excitation spectroscopy of CdTe quantum wells reveal that the dark triplet trion has lower energy than the singlet trion above 24 T. The singlet-triplet crossover is "hidden" (i.e., the spectral lines themselves do not cross due to different Zeeman energies), but is confirmed by temperature-dependent PL above and below 24 T. The data also show two bright triplet states.

引用

页数：4

共 26 条

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