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Title: Nonlocality and magnetic flux sensitivity of superconducting mesoscopic aluminium loops
Authors: Strunk, C
Bruyndoncx, Vital
Van Haesendonck, Christian
Moshchalkov, Victor
Bruynseraede, Yvan
Jonckheere, R
Issue Date: Apr-1996
Publisher: Editions physique
Series Title: Journal de physique iv vol:6 issue:C3 pages:253-257
Abstract: We have measured the magnetoresistance and the magnetic phase boundaries T-c(B) of mesoscopic superconducting structures containing an Al loop. The structures were designed to study the nonlocal interaction between the loop and the electrical leads connected to it. Several voltage probes have been attached to the current leads to monitor the superconducting transitions of both the loop and the segments of the leads. Strong coupling effects have been found between the loop and the leads. At low magnetic fields, T-c(B) of the lead segments reveals a pronounced oscillatory component, while the oscillation amplitude of T-c(B) of the loop is significantly reduced when compared to the usual Little-Parks effect. The coupling strength seems to be controlled by the temperature dependent superconducting coherence length.
ISSN: 1155-4339
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Solid State Physics and Magnetism Section

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