Superconductor-insulator transition in a disordered electronic system

Article

关键词: COHERENCE LENGTH SUPERCONDUCTORS;    U HUBBARD-MODEL;    BOSE SYSTEMS;    LOCALIZATION;    FILMS;    2D;   

DOI  :  10.1103/PhysRevB.54.R3756

来源: SCIE

【 摘 要 】

We study an electronic model of a two-dimensional s-wave superconductor in a random potential using quantum Monte Carlo simulations. The superfluid density and the strength of the delta function in the optical conductivity are found to vanish beyond a critical disorder. We calculate the temperature-dependent resistivity rho(dc)(T) for a highly disordered interacting Fermi system, Using this we identify the nonsuperconducting state as an insulator.

【 授权许可】

Free