TY - GEN
T1 - Magnetic response of a mesoscopic superconducting disk surrounded by a normal metal
AU - Goto, Hidenori
AU - Tsukagoshi, Kazuhito
AU - Kono, Kimitoshi
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - Magnetic response of a superconductor/normal-metal (S/N) concentric disk is studied by use of a ballistic Hall magnetometer, which enables us to investigate the mutual proximity effects in a single and a micrometer-sized sample. The core of the sample is a type-I superconductor whose diameter is comparable to the coherence length and the magnetic penetration depth. The core and the surround are prepared by an improved double-angle evaporation method to realize their metallic contacts. At T = 1.3 K, the pair breaking effect on the S has been predominant. We have observed the smaller diamagnetic susceptibility, the larger critical field, and the less stable vortex states in the S/N sample than in only S sample. These results are attributed to the suppression of the surface superconductivity, which effectively decreases the diameter of the superconductor.
AB - Magnetic response of a superconductor/normal-metal (S/N) concentric disk is studied by use of a ballistic Hall magnetometer, which enables us to investigate the mutual proximity effects in a single and a micrometer-sized sample. The core of the sample is a type-I superconductor whose diameter is comparable to the coherence length and the magnetic penetration depth. The core and the surround are prepared by an improved double-angle evaporation method to realize their metallic contacts. At T = 1.3 K, the pair breaking effect on the S has been predominant. We have observed the smaller diamagnetic susceptibility, the larger critical field, and the less stable vortex states in the S/N sample than in only S sample. These results are attributed to the suppression of the surface superconductivity, which effectively decreases the diameter of the superconductor.
KW - Hall magnetometer
KW - Mesoscopic superconductor
KW - Proximity effect
UR - http://www.scopus.com/inward/record.url?scp=33947542897&partnerID=8YFLogxK
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U2 - 10.1063/1.2354923
DO - 10.1063/1.2354923
M3 - Conference contribution
AN - SCOPUS:33947542897
SN - 0735403473
SN - 9780735403475
T3 - AIP Conference Proceedings
SP - 753
EP - 754
BT - LOW TEMPERATURE PHYSICS
T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Y2 - 10 August 2006 through 17 October 2006
ER -