The 78th JSAP Autumn Meeting, 2017

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Oral presentation

CS Code-sharing session » 【CS.4】3.11 & 13.7 Code-sharing session

[6p-A405-1~22] 【CS.4】3.11 & 13.7 Code-sharing session

Wed. Sep 6, 2017 1:15 PM - 7:30 PM A405 (405+406)

Takashi Asano(Kyoto Univ.), Satoshi Iwamoto(Univ. of Tokyo), Toshihiro Nakaoka(Sophia Univ.)

4:45 PM - 5:00 PM

[6p-A405-13] Nuclear spin depolarization due to a tilted quadrupolar field in a single quantum dot

Ryosuke Matsusaki1, Sohta Yamamoto1, 〇Reina Kaji1, Hirotaka Sasakura1, Satoru Adachi1 (1.Hokkaido Univ.)

Keywords:Quantum Dot, Nuclear spin polarization, Nuclear quadrupolar effect

A strongly confined electron in a semiconductor quantum dot (QD) is localized and interacts with the lattice nuclei of the QD. This hyperfine interaction (HFI) is enhanced drastically in a confined system like a QD, and the effective fields that are seen by the electron (BN) and the nuclei (Be) affect the respective dynamics mutually. In addition, the nuclear quadrupolar effect, which is a characteristic property in a self-assembled QD, affects significantly the electron spin via HFI, and can induces various novel phenomena. In this presentation, we discuss the nuclear quadrupolar effect by observing the nuclear spin depolarization under a zero magnetic field.