Bragg-Bose glass phase in vortex states of high-$T_{\mathrm{c}}$ superconductors with sparse and weak columnar defects

Abstract

Phase diagram of vortex states of high-$T_{\mathrm{c}}$ superconductors with {\it sparse and weak} columnar defects is obtained by large-scale Monte Carlo simulations of the three-dimensional anisotropic, frustrated XY model. The Bragg-Bose glass phase characterized by hexagonal Bragg spots and the diverging tilt modulus is observed numerically for the first time at low density of columnar defects. As the density of defects increases, the melting temperature increases owing to "selected pinning" of flux lines. When the density of defects further increases, the transition to the Bose glass phase occurs. The interstitial liquid region is observed between these two glass phases and the vortex liquid phase.

arXiv commentusing RevTex4, 4 pages, 8 figures (5 captions)

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Cited by in corpus (11)

• Analysis of low-field isotropic vortex glass containing vortex groups in YBCO thin films visualized by scanning SQUID microscopy
• Elastic systems with correlated disorder: Response to tilt and application to surface growth
• Phase diagram of the vortex system in layered superconductors with strong columnar pinning
• Collective pinning of imperfect vortex lattices by material line defects in extreme type-II superconductors
• Langevin Dynamics of the vortex matter two-stage melting transition in Bi_2Sr_2CaCu_2O${}_{8+\delta }$ in the presence of straight and of tilted columnar defects
• Collective pinning of the vortex lattice by columnar defects in layered superconductors
• Multiple Changes of Order of the Vortex Melting Transition in BSCCO with Dilute Columnar Defects
• Long-Range Order of Vortex Lattices Pinned by Point Defects in Layered Superconductors
• The phase diagram of vortex matter in layered superconductors with tilted columnar pinning centers
• Monte Carlo Simulation of the Crossover from Bose Glass to Bragg Glass Phase in Layered BSCCO with Columnar Defects
• Comparatively High In-Field Critical Current in Type-II Superconductors from Heterogeneous Columnar Pins: A Molecular Dynamics Study