Superconductor-insulator transition in frustrated Josephson-junction arrays on a honeycomb lattice

27th International Conference on Low Temperature Physics

Granato, Enzo^1

Laboratório Associado de Sensores e Materials, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP

12227-010, Brazil^1

关键词: Correlation lengths;    External magnetic field;    Finite size scaling;    Honeycomb lattices;    Josephson junction arrays;    Path integral Monte Carlo simulations;    Superconductor insulator transitions;    Zero temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/2/022017/pdf
DOI  :  10.1088/1742-6596/568/2/022017

来源: IOP

【 摘 要 】

The zero-temperature superconductor to insulator transition is studied in a selfcharging model of Josephson-junction arrays on a honeycomb lattice in an external magnetic field corresponding to f flux quantum per plaquette. Path integral Monte Carlo simulations of The equivalent (2+1)-dimensional classical model are used to study The phase transition and critical behavior. For f 1/3, The transition is first order. For f 0 and f 1/2, The transition is second order and The corresponding correlation length exponents are estimated from finite-size scaling.