Conductivity in glass phases of disordered granular superconductors in magnetic fields
arXiv:cond-mat/0606522 · doi:10.1143/JPSJ.76.064709
Abstract
The electric conductivities in glass phases of three-dimensional (3D) granular superconductors in magnetic fields are examined based on a quantum disordered Josephson-junction array. A correct inclusion of the Ohmic dissipative dynamics leads to glass phases with divergent dc conductivity. In contrast, with no dissipative term, a metallic response in a glass phase is obtained irrespective of the range of correlation of quenched disorder, i.e., even in the so-called Bose-glass phase with experimentally vanishing resistivity.
arXiv commentpublication version
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