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In-plane nuclear field formation investigated in single self-assembled quantum dots

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Title: In-plane nuclear field formation investigated in single self-assembled quantum dots
Authors: Yamamoto, S. Browse this author
Matsusaki, R. Browse this author
Kaji, R. Browse this author
Adachi, S. Browse this author →KAKEN DB
Issue Date: 26-Feb-2018
Publisher: American Physical Society (APS)
Journal Title: Physical Review B
Volume: 97
Issue: 7
Start Page: 075309
Publisher DOI: 10.1103/PhysRevB.97.075309
Abstract: We studied the formation mechanism of the in-plane nuclear field in single self-assembled In0.75Al0.25As/Al0.3Ga0.7As quantum dots. The Hanle curves with an anomalously large width and hysteretic behavior at the critical transverse magnetic field were observed in many single quantum dots grown in the same sample. In order to explain the anomalies in the Hanle curve indicating the formation of a large nuclear field perpendicular to the photo-injected electron spin polarization, we propose a new model based on the current phenomenological model for dynamic nuclear spin polarization. The model includes the effects of the nuclear quadrupole interaction and the sign inversion between in-plane and out-of-plane components of nuclear g factors, and the model calculations reproduce successfully the characteristics of the observed anomalies in the Hanle curves.
Rights: ©2018 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: 足立 智

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