General transport properties of superconducting quantum point contacts: A Green functions approach
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
Academic Press Inc.Date
1999-05-01Citation
10.1006/spmi.1999.0744
Superlattices and Microstructures 25.5 (1999): 925-936
ISSN
0749-6036 (print); 1096-3677 (online)DOI
10.1006/spmi.1999.0744Funded by
This work has been supported by the Spanish CICyT under contract PB97-0044Project
Gobierno de España. PB97-0044Editor's Version
http://dx.doi.org/10.1006/spmi.1999.0744Subjects
FísicaNote
This is the peer reviewed version of the following article: Superlattices and Microstructures 25.5 (1999): 925-936, which has been published in final form at http://dx.doi.org/10.1006/spmi.1999.0744Rights
© 1999 Academic PressAbstract
We discuss the general transport properties of superconducting quantum point contacts. We show how these properties can be obtained from a microscopic model using nonequilibrium Green's function techniques. For the case of a one-channel contact we analyze the response under different biasing conditions: constant applied voltage, current bias and microwave-induced transport. Current fluctuations are also analyzed with particular emphasis on thermal and shot-noise. Finally, the case of superconducting transport through a resonant level is discussed. The calculated properties show a remarkable agreement with the available experimental data from atomic-size contacts measurements. We suggest the possibility of extending this comparison to several other predictions of the theory
Files in this item
Google Scholar:Martin-Rodero, A.
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Levy-Yeyati Mizrahi, Alfredo
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Cuevas Rodríguez, Juan Carlos
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