2006
Magnetic response of a mesoscopic superconducting disk surrounded by a normal metal
LOW TEMPERATURE PHYSICS, PTS A AND B
- ,
- ,
- Volume
- 850
- Number
- First page
- 753
- Last page
- +
- Language
- English
- Publishing type
- Research paper (international conference proceedings)
- DOI
- 10.1063/1.2354923
- Publisher
- AMER INST PHYSICS
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.
- Link information
- ID information
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- DOI : 10.1063/1.2354923
- ISSN : 0094-243X
- Web of Science ID : WOS:000243396400332