Surface Enhancement of Superconductivity in Tin
V. F. Kozhevnikov, M. J. Van Bael, W. Vinckx, K. Temst, C. Van, Haesendonck, J. O. Indekeu (Katholieke Universiteit Leuven, Belgium)
TL;DR
This paper experimentally investigates how surface treatments can enhance superconductivity in tin, demonstrating that cold-working surfaces can increase the superconducting order parameter at the surface.
Contribution
It introduces a method to control surface-enhanced superconductivity in tin through cold-working, providing experimental evidence for surface effects on superconducting properties.
Findings
Cold-worked surfaces increase surface superconductivity in tin.
Surface enhancement can be controlled by surface treatment.
Experimental validation of surface effects on superconducting order parameter.
Abstract
The possibility of surface enhancement of superconductivity is examined experimentally. It is shown that single crystal tin samples with cold-worked surfaces represent a superconductor with a surface-enhanced order parameter (or negative surface extrapolation length b), whose magnitude can be controlled.
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