TY - JOUR
T1 - Numerical study of random superconductors
AU - Akino, N.
AU - Giardinà, C.
AU - Kosterlitz, J.M.
AU - Priezjev, N.V.
PY - 2004
Y1 - 2004
N2 - The XY model with quenched random disorder is studied numerically at T=0 by a defect scaling method as a model of a disordered superconductor. In 3D we find that, in the absence of screening, a vortex glass phase exists at low T for large disorder in 3D with stiffness exponent ¿˜+0.31 and with finite screening and in 2D this phase does not exist. For weak disorder, a superconducting phase exists which we identify as a Bragg glass. In the presence of screened vortex–vortex interactions, the vortex glass does not exist but the Bragg glass does.
AB - The XY model with quenched random disorder is studied numerically at T=0 by a defect scaling method as a model of a disordered superconductor. In 3D we find that, in the absence of screening, a vortex glass phase exists at low T for large disorder in 3D with stiffness exponent ¿˜+0.31 and with finite screening and in 2D this phase does not exist. For weak disorder, a superconducting phase exists which we identify as a Bragg glass. In the presence of screened vortex–vortex interactions, the vortex glass does not exist but the Bragg glass does.
U2 - 10.1016/j.physc.2004.03.184
DO - 10.1016/j.physc.2004.03.184
M3 - Article
VL - 408-410
SP - 484
EP - 486
JO - Physica C : Superconductivity
JF - Physica C : Superconductivity
SN - 0921-4534
ER -