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Ehrenfest-time-dependent excitation gap in a chaotic Andreev billiard

Adagideli, Inanc and Beenakker, C. (2002) Ehrenfest-time-dependent excitation gap in a chaotic Andreev billiard. Physical Review Letters 89, p. 237002.

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Other URL: http://prola.aps.org/abstract/PRL/v89/i23/e237002


Abstract

A semiclassical theory is developed for the appearance of an excitation gap in a ballistic chaotic cavity connected by a point contact to a superconductor. Diffraction at the point contact is a singular perturbation in the limit $\\hbar\\to 0$, which opens up a gap $E_{\\rm gap}$ in the excitation spectrum. The time scale $\\hbar/E_{\\rm gap}\\propto\\alpha^{-1}\\ln\\hbar$ (with $\\alpha$ the ...

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Item Type:Article
Date:2002
Institutions:UNSPECIFIED
Identification Number:
ValueType
cond-mat/0202206arXiv ID
Related URLs:
URLURL Type
http://arxiv.org/abs/cond-mat/0202206Preprint
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Owner: Redakteur Physik
Deposited On:20 Mar 2007
Last Modified:05 Aug 2009 13:33
Item ID:1861
Owner Only: item control page
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