標題: Superconducting fluctuation magnetoconductance in a tungsten carbide film
作者: Rosenbaum, R
Hsu, SY
Chen, JY
Lin, YH
Lin, JJ
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 5-Nov-2001
摘要: Magnetoconductance (MC) measurements have been performed on a 2140 Angstrom thick tungsten carbide film at temperatures very close to the superconducting transition temperature T-c of the film. The data are dominated by superconducting fluctuations. A novel three-dimensional phenomenological model is proposed to explain the MC data, yielding good fits. The Larkin beta factor, beta (Larkin), appeared as a fitting parameter. An expression proposed by Larkin for beta (Larkin) failed badly for temperatures extremely close to T-c. But at intermediate and high temperatures compared to T-c, Larkin's expression gave very good agreement in fits to the MC data. At temperatures very close to T-c, a crossover from three dimensions to two dimensions was observed in the behaviour of the MC of the film.
URI: http://dx.doi.org/10.1088/0953-8984/13/44/316
http://hdl.handle.net/11536/29255
ISSN: 0953-8984
DOI: 10.1088/0953-8984/13/44/316
期刊: JOURNAL OF PHYSICS-CONDENSED MATTER
Volume: 13
Issue: 44
起始頁: 10041
結束頁: 10056
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