Observation of hysteretic transport due to dynamic nuclear spin polarization in a GaAs lateral double quantum dot

Takashi Kobayashi, Kenichi Hitachi, Satoshi Sasaki, Koji Muraki

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We report a new transport feature in a GaAs lateral double quantum dot that emerges for magnetic-field sweeps and shows hysteresis due to dynamic nuclear spin polarization (DNP). This DNP signal appears in the Coulomb blockade regime by virtue of the finite interdot tunnel coupling and originates from the crossing between ground levels of the spin triplet and singlet extensively used for nuclear spin manipulations in pulsed-gate experiments. The magnetic-field dependence of the current level is suggestive of unbalanced DNP between the two dots, which opens up the possibility of controlling electron and nuclear spin states via dc transport.

本文言語English
論文番号216802
ジャーナルPhysical review letters
107
21
DOI
出版ステータスPublished - 2011 11月 14
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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