Rough Surface Effect on Meissner Diamagnetism in Normal-layer of N-S Proximity-Contact System

Abstract

Rough surface effect on the Meissner diamagnetic current in the normal layer of proximity contact N-S bi-layer is investigated in the clean limit. The diamagnetic current and the screening length are calculated by use of quasi-classical Green's function. We show that the surface roughness has a sizable effect, even when a normal layer width is large compared with the coherence length $\xi =v_{\mathrm{F}}/\pi T_{\mathrm{c}}$. The effect is as large as that of the impurity scattering and also as that of the finite reflection at the N-S interface.

12 pages, 3 figures. To be published in J. Phys. Soc. Jpn. Vol.71-1

References in corpus (4)

• Paramagnetic instability at normal-metal - superconductor interfaces
• Diamagnetic Response of an N-S-Proximity System at Arbitrary Impurity Concentration
• Diamagnetic response of cylindrical normal metal - superconductor proximity structures with low concentration of scattering centers
• Comment on "Orbital Paramagnetism of Electrons in Proximity to a Superconductor"