Theory of Flux-Flow Resistivity near H_<c2> for s-Wave Type-II Superconductors(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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This paper presents a microscopic calculation of the flux-flow resistivity ρ_f for s-wave type-II superconductors with arbitrary impurity concentrations near the upper critical field H_<C2>. It is found that, as the mean free path / becomes longer, ρ_f increases gradually from the dirty-limit result of Thompson [Phys. Rev. B 1 (1970) 327] and Takayama and Ebisawa [Prog. Theor. Phys. 44 (1970) 1450]. The limiting behaviors suggest that ρ_f(H) at low temperatures may change from convex downward to upward as / increases, thus deviating substantially from the linear dependence ρ_f ∝ H/H_<c2> predicted by the Bardeen-Stephen theory [Phys. Rev. 140 (1965) A1197].
- 社団法人日本物理学会の論文
- 2004-01-15
著者
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KITA Takafumi
Division of Physics, Hokkaido University
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Kita T
Hokkaido Univ. Sapporo Jpn
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Kita T
Hokkaido Univ. Sapporo
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Kita Takafumi
Depertment Of Applied Physics Faculty Of Engineering The University Of Tokyo
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Kita Takafumi
Division Of Physics Graduate School Of Science Hokkaido University
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