Localized excitons in quantum wells show spin relaxation without coherence loss

R. Zimmermann; W. Langbein; E. Runge; Jørn Märcher Hvam

Localized excitons in quantum wells show spin relaxation without coherence loss

R. Zimmermann
, W. Langbein
, E. Runge
, Jørn Märcher Hvam

Humboldt University of Berlin
TU Dortmund University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The coherence in the secondary emission from quantum well excitons is studied using the speckle method. Analysing the different polarization channels allows to conclude that (i) no coherence loss occurs in the cross-polarized emission, favouring spin beating instead of spin dephasing, and that (ii) the underlying interface disorder has a preferential orientation. The experimental results are successfully compared with a microscopic model of exciton disorder eigenstates including exchange splitting.

Original language	English
Journal	Physica E
Volume	10
Issue number	1-3
Pages (from-to)	40-44
ISSN	1386-9477
Publication status	Published - 2001

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@article{7ae6fbfac642444b85afdb880d5d3887,

title = "Localized excitons in quantum wells show spin relaxation without coherence loss",

abstract = "The coherence in the secondary emission from quantum well excitons is studied using the speckle method. Analysing the different polarization channels allows to conclude that (i) no coherence loss occurs in the cross-polarized emission, favouring spin beating instead of spin dephasing, and that (ii) the underlying interface disorder has a preferential orientation. The experimental results are successfully compared with a microscopic model of exciton disorder eigenstates including exchange splitting.",

author = "R. Zimmermann and W. Langbein and E. Runge and Hvam, \{J{\o}rn M{\"a}rcher\}",

year = "2001",

language = "English",

volume = "10",

pages = "40--44",

journal = "Physica E",

issn = "1386-9477",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Localized excitons in quantum wells show spin relaxation without coherence loss

AU - Zimmermann, R.

AU - Langbein, W.

AU - Runge, E.

AU - Hvam, Jørn Märcher

PY - 2001

Y1 - 2001

N2 - The coherence in the secondary emission from quantum well excitons is studied using the speckle method. Analysing the different polarization channels allows to conclude that (i) no coherence loss occurs in the cross-polarized emission, favouring spin beating instead of spin dephasing, and that (ii) the underlying interface disorder has a preferential orientation. The experimental results are successfully compared with a microscopic model of exciton disorder eigenstates including exchange splitting.

AB - The coherence in the secondary emission from quantum well excitons is studied using the speckle method. Analysing the different polarization channels allows to conclude that (i) no coherence loss occurs in the cross-polarized emission, favouring spin beating instead of spin dephasing, and that (ii) the underlying interface disorder has a preferential orientation. The experimental results are successfully compared with a microscopic model of exciton disorder eigenstates including exchange splitting.

M3 - Journal article

SN - 1386-9477

VL - 10

SP - 40

EP - 44

JO - Physica E

JF - Physica E

IS - 1-3

ER -

Localized excitons in quantum wells show spin relaxation without coherence loss

Abstract

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