Nuclear spin coherence time in a strained GaAs quantum well

M. Ono; G. Sato; J. Ishihara; S. Matsuzaka; Y. Ohno; H. Ohno

doi:10.1063/1.3666562

Nuclear spin coherence time in a strained GaAs quantum well

M. Ono, G. Sato, J. Ishihara, S. Matsuzaka, Y. Ohno, H. Ohno

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

We investigated the quadrupolar splitting dependence of the nuclear spin coherence time in an n-(110)GaAs/AlGaAs quantum well by time-resolved Kerr-rotation measurements combined with pulsed-rf nuclear magnetic resonance. In GaAs, all the constituent nuclei have quadrupole moment. Therefore the quadrupolar splitting is induced by electric field gradient, which can be controlled by varying strain. We found that the nuclear spin coherence time is extended as the quadrupolar splitting increases by applying the strain. This suggests that the influences of the other transitions are suppressed with increase of the quadrupolar splitting.

Original language	English
Title of host publication	Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages	685-686
Number of pages	2
DOIs	https://doi.org/10.1063/1.3666562
Publication status	Published - 2011
Event	30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of Duration: 2010 Jul 25 → 2010 Jul 30

Publication series

Name	AIP Conference Proceedings
Volume	1399
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	30th International Conference on the Physics of Semiconductors, ICPS-30
Country/Territory	Korea, Republic of
City	Seoul
Period	10/7/25 → 10/7/30

Keywords

Nuclear magnetic resonance
Quadrupole interaction
Semiconductor spintronics
Spin coherence

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10.1063/1.3666562

Cite this

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title = "Nuclear spin coherence time in a strained GaAs quantum well",

abstract = "We investigated the quadrupolar splitting dependence of the nuclear spin coherence time in an n-(110)GaAs/AlGaAs quantum well by time-resolved Kerr-rotation measurements combined with pulsed-rf nuclear magnetic resonance. In GaAs, all the constituent nuclei have quadrupole moment. Therefore the quadrupolar splitting is induced by electric field gradient, which can be controlled by varying strain. We found that the nuclear spin coherence time is extended as the quadrupolar splitting increases by applying the strain. This suggests that the influences of the other transitions are suppressed with increase of the quadrupolar splitting.",

keywords = "Nuclear magnetic resonance, Quadrupole interaction, Semiconductor spintronics, Spin coherence",

author = "M. Ono and G. Sato and J. Ishihara and S. Matsuzaka and Y. Ohno and H. Ohno",

year = "2011",

doi = "10.1063/1.3666562",

language = "English",

isbn = "9780735410022",

series = "AIP Conference Proceedings",

pages = "685--686",

booktitle = "Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30",

note = "30th International Conference on the Physics of Semiconductors, ICPS-30 ; Conference date: 25-07-2010 Through 30-07-2010",

}

Ono, M, Sato, G, Ishihara, J, Matsuzaka, S, Ohno, Y & Ohno, H 2011, Nuclear spin coherence time in a strained GaAs quantum well. in Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30. AIP Conference Proceedings, vol. 1399, pp. 685-686, 30th International Conference on the Physics of Semiconductors, ICPS-30, Seoul, Korea, Republic of, 10/7/25. https://doi.org/10.1063/1.3666562

TY - GEN

T1 - Nuclear spin coherence time in a strained GaAs quantum well

AU - Ono, M.

AU - Sato, G.

AU - Ishihara, J.

AU - Matsuzaka, S.

AU - Ohno, Y.

AU - Ohno, H.

PY - 2011

Y1 - 2011

N2 - We investigated the quadrupolar splitting dependence of the nuclear spin coherence time in an n-(110)GaAs/AlGaAs quantum well by time-resolved Kerr-rotation measurements combined with pulsed-rf nuclear magnetic resonance. In GaAs, all the constituent nuclei have quadrupole moment. Therefore the quadrupolar splitting is induced by electric field gradient, which can be controlled by varying strain. We found that the nuclear spin coherence time is extended as the quadrupolar splitting increases by applying the strain. This suggests that the influences of the other transitions are suppressed with increase of the quadrupolar splitting.

AB - We investigated the quadrupolar splitting dependence of the nuclear spin coherence time in an n-(110)GaAs/AlGaAs quantum well by time-resolved Kerr-rotation measurements combined with pulsed-rf nuclear magnetic resonance. In GaAs, all the constituent nuclei have quadrupole moment. Therefore the quadrupolar splitting is induced by electric field gradient, which can be controlled by varying strain. We found that the nuclear spin coherence time is extended as the quadrupolar splitting increases by applying the strain. This suggests that the influences of the other transitions are suppressed with increase of the quadrupolar splitting.

KW - Nuclear magnetic resonance

KW - Quadrupole interaction

KW - Semiconductor spintronics

KW - Spin coherence

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U2 - 10.1063/1.3666562

DO - 10.1063/1.3666562

M3 - Conference contribution

AN - SCOPUS:84855503698

SN - 9780735410022

T3 - AIP Conference Proceedings

SP - 685

EP - 686

BT - Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30

T2 - 30th International Conference on the Physics of Semiconductors, ICPS-30

Y2 - 25 July 2010 through 30 July 2010

ER -

Nuclear spin coherence time in a strained GaAs quantum well

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Keywords

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