Theory of Andreev resonances in quantum dots

Leadbeater, M. and Claughton, N. R. and Lambert, C. J. and Prigodin, V. N. (1996) Theory of Andreev resonances in quantum dots. Surface Science, 361-36. pp. 302-305. ISSN 0039-6028

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We present theoretical results for the electrical conductance G of a quantum dot in the presence of superconductivity. After deriving a generalization of the well-known Breit-Wigner formula, valid in the presence of superconducting leads, results for the distribution of conductance resonances are derived. For a normal (N) contact-normal dot (NDOT)-superconducting (S) contact, as the order parameter Δ of the S contact tends to zero, recent predictions for the resonant structure of a normal chaotic dot are reproduced. When Δ increases from zero, for finite applied voltage, resonances are destroyed.

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Journal Article
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Surface Science
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08 Oct 2019 12:10
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22 Nov 2022 08:12