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Mesoscopic superconducting analogs of the Aharonov-Bohm-Casher Effect

Leadbeater, M and Lambert, Colin (1995) Mesoscopic superconducting analogs of the Aharonov-Bohm-Casher Effect. Physical review letters, 74 (22). pp. 4519-4522. ISSN 0031-9007

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Abstract

We predict a new quantum interference effect for phase coherent loops containing a superconducting arm, in which the energy gap (superconducting phase gradient) plays the role of a scalar (vector) potential. By solving the Bogoliubov–de Gennes equation for small loops in one and two dimensions, it is demonstrated that if either the magnitude or the phase gradient of the superconducting order parameter is increased monotonically, the differential conductance oscillates. The frequency of oscillation is a factor of two lower than that of Tomasch oscillations and therefore defines a first harmonic for quasi-particle interference phenomena in mesoscopic superconductors.

Item Type: Article
Journal or Publication Title: Physical review letters
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 58146
Deposited By: ep_importer_pure
Deposited On: 25 Oct 2012 14:44
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:08
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58146

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