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Title: Noise current induced electrical transport anomalies near the superconducting transition in mesoscopic aluminum lines
Authors: Burk, B
Chien, CJ
Chandrasekhar, V
Strunk, C
Bruyndoncx, Vital
Van Haesendonck, Christian
Moshchalkov, Victor
Bruynseraede, Yvan
Issue Date: 1996
Publisher: Academic press ltd
Series Title: Superlattices and microstructures vol:20 issue:4 pages:575-580
Abstract: We investigate whether unintentionally applied currents may have induced the previously reported resistive and current-voltage characteristic anomalies near the superconducting transition temperature in quasi-one-dimensional aluminum lines. Our samples show no intrinsic anomalies, but a low frequency current deliberately added to the ordinary measuring current induces a resistive peak near the transition. Additional a.c. current applied to the voltage leads instead of the current leads induces an excess voltage peak near the critical current in V(I) curves. The resistive peak near the transition results from mixing, but we cannot explain the voltage peak by a simple mixing analysis. The similarity of the resistive and V(I) peaks to previous observations suggests possible extrinsic effects in earlier work. (C) 1996 Academic Press Limited
URI: 
ISSN: 0749-6036
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Solid State Physics and Magnetism Section

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