Shape resonances in the superconducting order parameter of ultrathin nanowires

Details Shape resonances in the superconducting order parameter of ultrathin nanowires Shape resonances in the superconducting order parameter of ultrathin nanowires

2005-08-01

arxiv.org/abs/cond-mat/0508062v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.73.012510

We study the shape resonance effect associated with the confined transverse superconducting modes of a cylindrical nanowire in the clean limit. Results of numerical investigations of the Bogoliubov-de Gennes equations show significant deviations of the energy gap parameter from its bulk value with a profound effect on the transition temperature. The most striking is that the size of the resonances is found to be by about order of magnitude larger than in ultrathin metallic films with the same width.

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