Hole spin-relaxation in quantum wells from saturation of inter-subband absorption

J. Kainz; Petra Schneider; S. D. Ganichev; U. Rössler; W. Wegscheider; D. Weiss; W. Prettl; V. V. Bel'kov; L. E. Golub; D. Schuh

doi:10.1016/j.physe.2003.12.035

Hole spin-relaxation in quantum wells from saturation of inter-subband absorption

J. Kainz, Petra Schneider, S. D. Ganichev, U. Rössler, W. Wegscheider, D. Weiss, W. Prettl, V. V. Bel'kov, L. E. Golub, D. Schuh

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

2 Scopus citations

Abstract

Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with smaller QW width. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions. The question of selection rules for intersubband transitions between hole subbands is addressed.

Original language	English
Pages (from-to)	418-421
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	22
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physe.2003.12.035
State	Published - Apr 2004
Externally published	Yes
Event	15th International Conference on ELectronic Propreties - Nara, Japan Duration: 14 Jul 2003 → 18 Jul 2003

Keywords

Hole spin-relaxation
Inter-subband transition
Saturation of absorption

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10.1016/j.physe.2003.12.035

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title = "Hole spin-relaxation in quantum wells from saturation of inter-subband absorption",

abstract = "Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with smaller QW width. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions. The question of selection rules for intersubband transitions between hole subbands is addressed.",

keywords = "Hole spin-relaxation, Inter-subband transition, Saturation of absorption",

author = "J. Kainz and Petra Schneider and Ganichev, {S. D.} and U. R{\"o}ssler and W. Wegscheider and D. Weiss and W. Prettl and Bel'kov, {V. V.} and Golub, {L. E.} and D. Schuh",

year = "2004",

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doi = "10.1016/j.physe.2003.12.035",

language = "English",

volume = "22",

pages = "418--421",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier",

number = "1-3",

note = "15th International Conference on ELectronic Propreties ; Conference date: 14-07-2003 Through 18-07-2003",

}

TY - JOUR

T1 - Hole spin-relaxation in quantum wells from saturation of inter-subband absorption

AU - Kainz, J.

AU - Schneider, Petra

AU - Ganichev, S. D.

AU - Rössler, U.

AU - Wegscheider, W.

AU - Weiss, D.

AU - Prettl, W.

AU - Bel'kov, V. V.

AU - Golub, L. E.

AU - Schuh, D.

PY - 2004/4

Y1 - 2004/4

N2 - Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with smaller QW width. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions. The question of selection rules for intersubband transitions between hole subbands is addressed.

AB - Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with smaller QW width. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions. The question of selection rules for intersubband transitions between hole subbands is addressed.

KW - Hole spin-relaxation

KW - Inter-subband transition

KW - Saturation of absorption

UR - http://www.scopus.com/inward/record.url?scp=11144356513&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2003.12.035

DO - 10.1016/j.physe.2003.12.035

M3 - Conference article

AN - SCOPUS:11144356513

SN - 1386-9477

VL - 22

SP - 418

EP - 421

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

T2 - 15th International Conference on ELectronic Propreties

Y2 - 14 July 2003 through 18 July 2003

ER -

Hole spin-relaxation in quantum wells from saturation of inter-subband absorption

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Keywords

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