Crossover behaviors in liquid region of vortex states above a critical point caused by point defects
| dc.creator | Nonomura, Yoshihiko | |
| dc.creator | Hu, Xiao | |
| dc.date | 2003-02-28 | |
| dc.date.accessioned | 2026-07-07T02:49:49Z | |
| dc.date.available | 2026-07-07T02:49:49Z | |
| dc.description | Vortex states in high-$T_{\rm c}$ superconductors with point defects are studied by large-scale Monte Carlo simulations of the three-dimensional frustrated XY model. A critical point is observed on the first-order phase boundary between the vortex slush and vortex liquid phases. A step-like anomaly of the specific heat is detected in simulations of finite systems, similar to an experimental observation [F.~Bouquet {\it et al.}, Nature (London) {\bf 411}, 448 (2001)]. However, it diminishes with increasing system size, and the number and size distribution of thermally-excited vortex loops show continuous behaviors around this anomaly. Therefore, the present study suggests a crossover rather than a thermodynamic phase transition above the critical point. | |
| dc.description | 4 pages, 9 eps figures, using RevTeX4 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0302597 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0302597 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/20951 | |
| dc.subject | Superconductivity | |
| dc.title | Crossover behaviors in liquid region of vortex states above a critical point caused by point defects | |
| dc.type | text |