Collective Behavior of a Spin-Aligned Gas of Interwell Excitons in Double Quantum Wells

A. V. Larionov; M. Bayer; Jørn Märcher Hvam; K. Soerensen

doi:10.1134/1.1898000

Collective Behavior of a Spin-Aligned Gas of Interwell Excitons in Double Quantum Wells

A. V. Larionov, M. Bayer, Jørn Märcher Hvam, K. Soerensen

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

Abstract

The kinetics of a spin-aligned gas of interwell excitons in GaAs/AlGaAs double quantum wells (n–i–n heterostructure) is studied. The temperature dependence of the spin relaxation time for excitons, in which a photoexcited electron and hole are spatially separated between two adjacent quantum wells, is analyzed. For this purpose, use was made of pulsed circularly polarized resonant photoexcitation of intrawell 1sHH excitons by a femtosecond frequency-controlled laser. A sharp increase in the spin-relaxation rate is observed for interwell excitons upon a change in temperature from 2 to 3.6 K. This effect is associated with indirect evidence of the coherence of the collective phase of interwell excitons at temperatures below the critical value.

Original language	English
Journal	JETP Letters
Volume	81
Issue number	3
Pages (from-to)	108-111
ISSN	0021-3640
DOIs	https://doi.org/10.1134/1.1898000
Publication status	Published - 2005

Access to Document

10.1134/1.1898000

OpenUrl availability

Full text

Cite this

@article{707dfb304c6d4e67a79f98afb768db55,

title = "Collective Behavior of a Spin-Aligned Gas of Interwell Excitons in Double Quantum Wells",

abstract = "The kinetics of a spin-aligned gas of interwell excitons in GaAs/AlGaAs double quantum wells (n–i–n heterostructure) is studied. The temperature dependence of the spin relaxation time for excitons, in which a photoexcited electron and hole are spatially separated between two adjacent quantum wells, is analyzed. For this purpose, use was made of pulsed circularly polarized resonant photoexcitation of intrawell 1sHH excitons by a femtosecond frequency-controlled laser. A sharp increase in the spin-relaxation rate is observed for interwell excitons upon a change in temperature from 2 to 3.6 K. This effect is associated with indirect evidence of the coherence of the collective phase of interwell excitons at temperatures below the critical value.",

author = "Larionov, {A. V.} and M. Bayer and Hvam, {J{\o}rn M{\"a}rcher} and K. Soerensen",

year = "2005",

doi = "10.1134/1.1898000",

language = "English",

volume = "81",

pages = "108--111",

journal = "JETP Letters",

issn = "0021-3640",

publisher = "Pleiades Publishing",

number = "3",

}

TY - JOUR

T1 - Collective Behavior of a Spin-Aligned Gas of Interwell Excitons in Double Quantum Wells

AU - Larionov, A. V.

AU - Bayer, M.

AU - Hvam, Jørn Märcher

AU - Soerensen, K.

PY - 2005

Y1 - 2005

N2 - The kinetics of a spin-aligned gas of interwell excitons in GaAs/AlGaAs double quantum wells (n–i–n heterostructure) is studied. The temperature dependence of the spin relaxation time for excitons, in which a photoexcited electron and hole are spatially separated between two adjacent quantum wells, is analyzed. For this purpose, use was made of pulsed circularly polarized resonant photoexcitation of intrawell 1sHH excitons by a femtosecond frequency-controlled laser. A sharp increase in the spin-relaxation rate is observed for interwell excitons upon a change in temperature from 2 to 3.6 K. This effect is associated with indirect evidence of the coherence of the collective phase of interwell excitons at temperatures below the critical value.

AB - The kinetics of a spin-aligned gas of interwell excitons in GaAs/AlGaAs double quantum wells (n–i–n heterostructure) is studied. The temperature dependence of the spin relaxation time for excitons, in which a photoexcited electron and hole are spatially separated between two adjacent quantum wells, is analyzed. For this purpose, use was made of pulsed circularly polarized resonant photoexcitation of intrawell 1sHH excitons by a femtosecond frequency-controlled laser. A sharp increase in the spin-relaxation rate is observed for interwell excitons upon a change in temperature from 2 to 3.6 K. This effect is associated with indirect evidence of the coherence of the collective phase of interwell excitons at temperatures below the critical value.

U2 - 10.1134/1.1898000

DO - 10.1134/1.1898000

M3 - Journal article

SN - 0021-3640

VL - 81

SP - 108

EP - 111

JO - JETP Letters

JF - JETP Letters

IS - 3

ER -

Collective Behavior of a Spin-Aligned Gas of Interwell Excitons in Double Quantum Wells

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this