Superconductor-insulator quantum critical point in 1+epsilon dimensions

Article

关键词: INTERACTING FERMIONS;    LUTTINGER LIQUID;    TRANSITION;    SYSTEMS;    LOCALIZATION;    CONDUCTIVITY;    MODEL;    GAS;   

DOI  :  10.1103/PhysRevB.57.1303

来源: SCIE

【 摘 要 】

A system of disordered spinless fermions infinitesimally above one dimension at zero temperature is studied using the perturbative renormalization-group theory to first order in disorder, and to second order in interaction. We find a superconductor-to-Anderson insulator quantum fixed point at an infinitesimal value of disorder, and calculate the correlation length and the dynamical exponents to the lowest order in epsilon and in interaction. The scaling of conductivity with temperature and the behavior of characteristic temperature scales on both sides of the transition is determined.

【 授权许可】

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