Observation of the Resonant Tunneling of Cooper Pairs
D. B. Haviland, Y. Harada, P. Delsing, C. D. Chen, T. Claeson
DOI 10.1103/PhysRevLett.73.1541 · Physical Review Letters
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Abstract
We demonstrate how the Coulomb blockade of tunneling and the coherent Josephson tunneling of electron pairs can coexist in the same experiment. Measurements were made on a circuit consisting of two dc SQUIDs connected in series, with a gate capacitively coupled to the center electrode. Peaks in the current as a function of bias voltage shifted position with gate voltage in agreement with the theory of resonant Cooper pair tunneling.
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