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VOLUME 94 | ISSUE 9 | PAGE 748
Ginzburg-Landau slopes of the anisotropic upper critical magnetic field and band parameters in the superconductor (TMTSF)2ClO4
A. G. Lebed
Department of Physics, University of Arizona, AZ 85721 Tucson, USA
Landau Institute for Theoretical Physics RAS, 142432 Chernogolovka, Russia

Abstract
We theoretically determine the Ginzburg-Landau slopes of the anisotropic upper critical magnetic field in a quasi-one-dimensional superconductor and correct the previous works on this issue. By using the experimentally measured values of the Ginzburg-Landau slopes in the superconductor (TMTSF)ClO4, we determine band parameters of its electron spectrum. Our main result is that the so-called quantum dimensional crossover has to happen in this material in magnetic fields, H = 3-8 T, which are much lower than the previously assumed. We discuss how this fact influences metallic and superconducting properties of the (TMTSF)2ClO4.


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