Conductivity in glass phases of disordered granular superconductors in magnetic fields

Details Conductivity in glass phases of disordered granular superconductors in magnetic fields Conductivity in glass phases of disordered granular superconductors in magnetic fields

2006-06-20

arxiv.org/abs/cond-mat/0606522v5

J. Phys. Soc. Jpn. 76, 064709 (June, 2007)

Physics

Condensed Matter

Superconductivity

publication version

Scientific paper

10.1143/JPSJ.76.064709

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.

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