Coherent Cooper-Pair Tunneling in a Superconducting Single Electron Transistor
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概要
- 論文の詳細を見る
We investigate how coherent Cooper-pair tunneling depends on the competition between Josephson coupling energy E_j and charging energy E_c. Measurements were performed on a circuit consisting of two dc-SQUIDs in series, with a gate capacitively coupled to the central island. As the E_j/E_c 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.
- 社団法人応用物理学会の論文
- 1995-08-30
著者
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TAKAYANAGI Hideaki
NTT Basic Research Laboratories, NTT Corporation
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Harada Yuichi
Ntt Basic Research Laboratories
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Odintsov Arkadi
Delft University Of Technology:electrotechnical Laboratory
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Takayanagi Hideaki
Ntt Basic Research Laboratories
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