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Negative Length Orbits in Normal-Superconductor Billiard Systems.

Cserti, J. and Vattay, G. and Koltai, J. and Taddei, F. and Lambert, C. J. (2000) Negative Length Orbits in Normal-Superconductor Billiard Systems. Physical Review Letters, 85 (17). pp. 3704-3707.

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Abstract

The path-length spectra of mesoscopic systems including diffractive scatterers and connected to a superconductor are studied theoretically. We show that the spectra differ fundamentally from that of normal systems due to the presence of Andreev reflection. It is shown that negative path lengths should arise in the spectra as opposed to the normal system. To highlight this effect we carried out both quantum mechanical and semiclassical calculations for the simplest possible diffractive scatterer. The most pronounced peaks in the path-length spectra of the reflection amplitude are identified by the routes that the electron and/or hole travels.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 587
Deposited By: Prof Colin J. Lambert
Deposited On: 26 Jul 2007
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:14
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/587

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