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Theoretical Description of Resistive Behavior near a Quantum Vortex-Glass Transition

Hideharu Ishida·Ryusuke Ikeda
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Abstract

Resistive behaviors at nonzero temperatures (T > 0) reflecting a quantum vortex-glass (VG) transition (the so-called field-tuned superconductor-insulator transition at T=0) are studied based on a quantum Ginzburg-Landau (GL) action for a s-wave pairing case containing microscopic details. The ordinary dissipative dynamics of the pair-field is assumed on the basis of a consistency between the fluctuation conductance terms excluded from GL approach and an observed negative magnetoresistance. It is shown that the VG contribution, G_{vg}(B=B_{vg}, T \to 0),to 2D fluctuation conductance at the VG transition field B_{vg} depends on the strength of a repulsive-interaction between electrons and takes a universal value only in the ordinary dirty limit neglecting the electron-repulsion. Available resistivity data near B_{vg} are discussed based on our results, and extensions to the cases of a d-wave pairing and of 3D systems are briefly commented on.

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Hideharu Ishida, Ryusuke Ikeda. 2001-10-18. Theoretical Description of Resistive Behavior near a Quantum Vortex-Glass Transition. https://doi.org/10.1143/jpsj.71.254

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