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General transport properties of superconducting quantum point contacts: A Green functions approach

Author
Martin-Rodero, A.; Levy-Yeyati Mizrahi, Alfredountranslated; Cuevas Rodríguez, Juan Carlosuntranslated
Entity
UAM. Departamento de Física Teórica de la Materia Condensada
Publisher
Academic Press Inc.
Date
1999-05-01
Citation
10.1006/spmi.1999.0744
Superlattices and Microstructures 25.5 (1999): 925-936
 
 
 
ISSN
0749-6036 (print); 1096-3677 (online)
DOI
10.1006/spmi.1999.0744
Funded by
This work has been supported by the Spanish CICyT under contract PB97-0044
Project
Gobierno de España. PB97-0044
Editor's Version
http://dx.doi.org/10.1006/spmi.1999.0744
Subjects
Física
URI
http://hdl.handle.net/10486/669630
Note
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.1999.0744
Rights
© 1999 Academic Press

Abstract

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
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Google™ Scholar:Martin-Rodero, A. - Levy-Yeyati Mizrahi, Alfredo - Cuevas Rodríguez, Juan Carlos

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  • Producción científica en acceso abierto de la UAM [17219]

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