Effect of electron spin-spin exchange interaction on spin precession in coupled quantum well
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概要
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Electron spin-spin interaction in an asymmetric coupled quantum well (CQW) was investigated through electron spin-precession measurements. Precession (Larmor) frequencies from electrons localized in two CQWs were measured by means of polarization- and time-resolved photoluminescence measurements under a high magnetic field. At a low excitation power density, the Larmor frequency of the CQW was same as that of a single quantum well. The Larmor frequency of electron spin in one well was shifted to that in the other well as the excitation power density was increased. These experimental results are quantitatively explained by an exchange interaction between electrons localized in the two wells.
- American Institute of Physicsの論文
- 2011-08-11
著者
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Gotoh H
Research Center Mitsubishi Kasei Co.
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Gotoh H
Ntt Corp. Kanagawa Jpn
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Hiroaki Ando
Department Of Physics Konan University
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Kamada Hidehiro
Ntt Opto-electronics Laboratories
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