Coherent cooper-pair tunneling in a superconducting single electron transistor

Yuichi Harada, Hideaki Takayanagi, Arkadi A. Odintsov

研究成果: ジャーナルへの寄稿学術誌査読

抄録

We investigate how coherent Cooper-pair tunneling depends on the competition between Josephson coupling energy Ej and charging energy Eq. Measurements were performed on a circuit consisting of two dc-SQUIDs in series, with a gate capacitively coupled to the central island. As the Ej/Ec ratio decreased, coherent Cooper pairs tended to tunnel incoherently. Measured data show good agreement with theoretical calculations in strong and weak coupling limits. This experiment implies the manifestation of Heisenberg's uncertainty principle in a superconductor.

本文言語英語
ページ(範囲)4572-4574
ページ数3
ジャーナルJapanese journal of applied physics
34
8
DOI
出版ステータス出版済み - 8月 1995
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 工学一般
  • 物理学および天文学一般

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