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Geometrical enhancement of the proximity effect in quantum wires with extended superconducting tunnel contacts

Fagas, Giorgos and Tkachov, Grygoriy and Pfund, Andreas and Richter, Klaus (2005) Geometrical enhancement of the proximity effect in quantum wires with extended superconducting tunnel contacts. Physical Review B (PRB) 71, 224510-1-224510-10.

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Other URL: http://link.aps.org/abstract/PRB/v71/e224510


Abstract

We study Andreev reflection in a ballistic one- dimensional channel coupled in parallel to a superconductor via a tunnel barrier of finite length {\it L}. The dependence of the low-energy Andreev reflection probability {\it R$_{A}$} on {\it L} reveals the existence of a characteristic length scale {\it $\xi$;$_{N}$} beyond which {\it R$_{A}$(L)} is enhanced up to unity despite the low ...

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Item Type:Article
Date:2005
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Projects:Forschergruppe Ferromagnet-Halbleiter Nanostrukturen, Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht
Identification Number:
ValueType
10.1103/PhysRevB.71.224510DOI
cond-mat/0501303arXiv ID
Related URLs:
URLURL Type
http://de.arxiv.org/abs/cond-mat/0501303Preprint
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Owner: Timo Hartmann
Deposited On:20 Mar 2007
Last Modified:13 Mar 2014 09:58
Item ID:1532
Owner Only: item control page
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