Millisecond-Range Electron Spin Memory in Singly-Charged InP Quantum Dots
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- Pal Bipul
- Institute of Physics, University of Tsukuba
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- Ikezawa Michio
- Institute of Physics, University of Tsukuba
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- Masumoto Yasuaki
- Institute of Physics, University of Tsukuba
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- Ignatiev Ivan V.
- Institute of Physics, University of Tsukuba Institute of Physics, St.-Petersburg State University
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抄録
We report millisecond-range spin memory of resident electrons in an ensemble of InP quantum dots (QDs) under a small magnetic field of 0.1 T applied along the optical excitation axis at temperatures up to about 5 K. A pump-probe photoluminescence (PL) technique is used for optical-orientation of electron spins by the pump pulses and for study of spin relaxation over the long time scale by measuring the degree of circular polarization of the probe PL as a function of pump-probe delay. Dependence of spin decay rate on temperature and magnetic field suggests two-phonon processes as the dominant spin relaxation mechanism in these QDs at low temperatures.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 75 (5), 054702-, 2006
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679167149568
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- NII論文ID
- 110004702330
- 210000106152
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2006JPSJ...75e4702P
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7908318
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可