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Anomalous Hanle effect considered in time-resolved measurements and numerical simulations

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Title: Anomalous Hanle effect considered in time-resolved measurements and numerical simulations
Authors: Yamamoto, S. Browse this author →KAKEN DB
Kaji, R. Browse this author
Adachi, S. Browse this author →KAKEN DB
Issue Date: 16-Aug-2023
Publisher: American Physical Society (APS)
Journal Title: Physical Review B
Volume: 108
Issue: 5
Start Page: 054422
Publisher DOI: 10.1103/PhysRevB.108.054422
Abstract: In this study, the formation of a large in-plane nuclear field, known as the anomalous Hanle effect, in a self-assembled quantum dot was studied from both experimental and theoretical aspects. Time-resolved measurements of photoluminescence revealed that the buildup time of the nuclear field increased with increasing applied transverse magnetic field strength. Further, we found that inversion of the circular polarization degree of photoluminescence due to the excitation helicity reversal was completed on a timescale at least three orders of magnitude faster than the nuclear field buildup time. Accordingly, we reconsidered the previously proposed model for the anomalous Hanle effect. The alternatively developed model successfully explains the experimental results, suggesting that the in-plane component of the major principal axis of nuclear quadrupole interaction is essential for the generation of the anomalous Hanle effect.
Rights: ©[2023] 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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