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Direct observation of nuclear field fluctuations in single quantum dots

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Title: Direct observation of nuclear field fluctuations in single quantum dots
Authors: Kaji, R. Browse this author
Adachi, S. Browse this author →KAKEN DB
Sasakura, H. Browse this author →KAKEN DB
Muto, S. Browse this author →KAKEN DB
Issue Date: 15-Apr-2012
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 85
Issue: 15
Start Page: 155315
Publisher DOI: 10.1103/PhysRevB.85.155315
Abstract: The spin interaction between an electron and nuclei was investigated optically in a single self-assembled InAlAs quantum dot (QD). In spin dynamics at the initial stage, the fluctuation of nuclear field and the resulting electron spin relaxation time play a crucial role. We examined a positively charged exciton in a QD to evaluate the key physical quantities directly via the temporal evolution measurements of the Overhauser shift and the degree of circular polarization. In addition, the validity of our used spin dynamics model was discussed in the context of the experimentally obtained key parameters.
Rights: ©2012 American Physical Society
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鍜治 怜奈

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