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Title: Nonlocal effects in mesoscopic superconducting Al structures
Authors: Strunk, C
Bruyndoncx, Vital
Moshchalkov, Victor
Van Haesendonck, Christian
Bruynseraede, Yvan
Issue Date: 1996
Publisher: Czechoslovak jnl of physics
Series Title: Czechoslovak journal of physics vol:46 pages:2337-2338
Abstract: We have measured the magnetoresistance R(B) and the magnetic phase boundaries T-c(B) of a mesoscopic superconducting Al loop and of the leads connected to the loop. Pronounced oscillations with flux period h/2e of R(B) and T-c(B) are observed for the loop as well as for the leads. At low magnetic fields the oscillation amplitude Delta T-c(B) of the loop is suppressed when compared to the usual Little-Parks oscillations in Al microcylinders. With increasing magnetic field, Delta T-c(B) for the loop rises to the theoretically expected value, while the nonlocal oscillations in the leads are dying out. The results can be understood in terms of a proximity effect coupling between the leads and the loop, which is weakened when the temperature dependent coherence length decreases.
URI: 
ISSN: 0011-4626
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Solid State Physics and Magnetism Section

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