Rough surface effect on Meissner diamagnetism in normal-layer of N-S proximity-contact system

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...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2002, Vol.71 (1), p.293-299
Main Authors: YAMADA, Kotaro, HIGASHITANI, Seiji, NAGAI, Katsuhiko
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary: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 ξ =vF/π Tc. The effect is as large as that of the impurity scattering and also as that of the finite reflection at the N-S interface.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.71.293