Spin relaxation in n-modulation doped GaAs/AlGaAs (1 1 0) quantum wells

T. Adachi; Y. Ohno; F. Matsukura; H. Ohno

doi:10.1016/S1386-9477(01)00049-2

Spin relaxation in n-modulation doped GaAs/AlGaAs (1 1 0) quantum wells

T. Adachi, Y. Ohno, F. Matsukura, H. Ohno

Leadership

Tohoku University

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

We measured the electron spin relaxation time τ_s in n-modulation doped GaAs/AlGaAs (110) multiple quantum wells by pump probe method. The value of τ_s exceeds 10 ns even at room temperature, which is two orders of magnitude longer than that in (001) GaAs quantum wells. The τ_s dependence on quantized-electron energy, pump beam power and temperature can qualitatively be explained by the reduction of the electron-hole exchange interaction due to screening.

Original language	English
Pages (from-to)	36-39
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	10
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(01)00049-2
Publication status	Published - 2001 May

Keywords

Electron spin
GaAs/AlGaAs
Quantum wells
Spin relaxation

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10.1016/S1386-9477(01)00049-2

Cite this

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title = "Spin relaxation in n-modulation doped GaAs/AlGaAs (1 1 0) quantum wells",

abstract = "We measured the electron spin relaxation time τs in n-modulation doped GaAs/AlGaAs (110) multiple quantum wells by pump probe method. The value of τs exceeds 10 ns even at room temperature, which is two orders of magnitude longer than that in (001) GaAs quantum wells. The τs dependence on quantized-electron energy, pump beam power and temperature can qualitatively be explained by the reduction of the electron-hole exchange interaction due to screening.",

keywords = "Electron spin, GaAs/AlGaAs, Quantum wells, Spin relaxation",

author = "T. Adachi and Y. Ohno and F. Matsukura and H. Ohno",

note = "Funding Information: This work was partly supported by “Research for the Future Program” from the Japan Society for the Promotion of Science (JSPS-RFTF 97P00202), and Grant-in-Aids for the Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan (No. 12305001).",

year = "2001",

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doi = "10.1016/S1386-9477(01)00049-2",

language = "English",

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pages = "36--39",

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

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TY - JOUR

T1 - Spin relaxation in n-modulation doped GaAs/AlGaAs (1 1 0) quantum wells

AU - Adachi, T.

AU - Ohno, Y.

AU - Matsukura, F.

AU - Ohno, H.

N1 - Funding Information: This work was partly supported by “Research for the Future Program” from the Japan Society for the Promotion of Science (JSPS-RFTF 97P00202), and Grant-in-Aids for the Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan (No. 12305001).

PY - 2001/5

Y1 - 2001/5

N2 - We measured the electron spin relaxation time τs in n-modulation doped GaAs/AlGaAs (110) multiple quantum wells by pump probe method. The value of τs exceeds 10 ns even at room temperature, which is two orders of magnitude longer than that in (001) GaAs quantum wells. The τs dependence on quantized-electron energy, pump beam power and temperature can qualitatively be explained by the reduction of the electron-hole exchange interaction due to screening.

AB - We measured the electron spin relaxation time τs in n-modulation doped GaAs/AlGaAs (110) multiple quantum wells by pump probe method. The value of τs exceeds 10 ns even at room temperature, which is two orders of magnitude longer than that in (001) GaAs quantum wells. The τs dependence on quantized-electron energy, pump beam power and temperature can qualitatively be explained by the reduction of the electron-hole exchange interaction due to screening.

KW - Electron spin

KW - GaAs/AlGaAs

KW - Quantum wells

KW - Spin relaxation

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M3 - Article

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VL - 10

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EP - 39

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-3

ER -

Spin relaxation in n-modulation doped GaAs/AlGaAs (1 1 0) quantum wells

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Keywords

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