Aharonov-Bohm oscillations changed by indirect interdot tunneling via electrodes in parallel-coupled vertical double quantum Dots

T. Hatano, T. Kubo, Y. Tokura, S. Amaha, S. Teraoka, S. Tarucha

研究成果: Article査読

44 被引用数 (Scopus)

抄録

Aharonov-Bohm (AB) oscillations are studied for a parallel-coupled vertical double quantum dot with a common source and drain electrode. We observe AB oscillations of current via a one-electron bonding state as the ground state and an antibonding state as the excited state. As the center gate voltage becomes more negative, the oscillation period is clearly halved for both the bonding and antibonding states, and the phase changes by half a period for the antibonding state. This result can be explained by a calculation that takes account of the indirect interdot coupling via the two electrodes.

本文言語English
論文番号076801
ジャーナルPhysical review letters
106
7
DOI
出版ステータスPublished - 2011 2月 15
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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