Coulomb interaction at the superconductor-to-Mott-insulator transition

Article

关键词: JOSEPHSON-JUNCTION ARRAYS;    QUANTUM CRITICAL PHENOMENA;    MAGNETIC-FIELD;    2-DIMENSIONAL SUPERCONDUCTORS;    CRITICAL-BEHAVIOR;    PHASE-TRANSITION;    FILMS;    MODEL;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.58.9450

来源: SCIE

【 摘 要 】

We reexamine the effects of long-range Coulomb interaction on the onset of superconductivity. We use the model of N complex scalar fields with the Coulomb interaction studied first by Fisher and Grinstein (FG). We find that near d=3 space dimension, the system undergoes second order phase transition if N greater than or equal to 55.39, but undergoes possible fluctuation driven first order transition if N<55.39. We give the detailed derivation of the field theory renormalization group (RG) of this model to one loop. Our RG results disagree with those of FG near d=3. A possible scenario at d=2 is proposed. [S0163-1829(98)00633-X].

【 授权许可】

Free