Transport properties near the z=2 insulator-superconductor transition

Article

关键词: NONZERO-TEMPERATURE TRANSPORT;    JOSEPHSON-JUNCTION ARRAYS;    QUANTUM;    CONDUCTIVITY;    DISSIPATION;    FIELD;   

DOI  :  10.1103/PhysRevB.63.224503

来源: SCIE

【 摘 要 】

We consider here the fluctuation conductivity near the point of the insulator-superconductor transition in a system of Josephson junction arrays in the presence of particle-hole asymmetry and Ohmic dissipation. The transition is characterized by the dynamical critical exponent z=2, opening the possibility of the perturbative renormalization-group treatment. The coupling to the Ohmic heat bath, giving the finite quasiparticle lifetime, leads to the nonmonotonic behavior of the de conductivity as a function of temperature in the leading logarithmic approximation.

【 授权许可】

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