Size-dependent enhancement of superconductivity in nanowires
A. A. Shanenko, M. D. Croitoru, M. Zgirski, F. M. Peeters, K. Arutyunov
Abstract
A shape-dependent superconducting resonance can be expected when an energy level associated with the transverse motion in a wire passes through the Fermi surface. We show that the recently observed width-dependent increase of Tc in Al and Sn nanowires is a consequence of this shape resonance effect.
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