Vortex-lattice melting in magnesium diboride in terms of the elastic theory

Abstract

In the framework of elastic theory, we study the vortex-lattice melting transitions in magnesium diboride for magnetic fields both parallel and perpendicular to the anisotropy axis. Using the parameters from experiments, the vortex-lattice melting lines in the H-T diagram are located systematically by various groups of Lindemann numbers and the anisotropic parameters. It is observed that the theoretical result for the vortex melting with parallel and perpendicular fields agrees well with the experimental data.

4 pages, 4 figures

References in corpus (17)

• Superconductivity of metallic boron in MgB_2
• Beyond Eliashberg superconductivity in MgB2: anharmonicity, two-phonon scattering, and multiple gaps
• Boron Isotope Effect in Superconducting MgB${}_2$
• Specific Heat of Mg ^{11}B_2
• Temperature and field dependence of the anisotropy of MgB2
• Evidence for Strong-coupling S-wave Superconductivity in MgB2 :11B NMR Study
• Anisotropic superconducting properties of MgB2 single crystals probed by in-plane electrical transport measurements
• On the Ginzburg-Landau Analysis of the Upper Critical Field Hc2 in MgB2
• Superconducting properties of well-shaped MgB2 single crystal
• Temperature dependence and anisotropy of the bulk upper critical field H_c2 of MgB_2
• Temperature dependent anisotropy of the penetration depth and coherence length in MgB$_2
• Why magnesium diboride is not described by anisotropic Ginzburg-Landau theory
• Direct observation of non-local effects in a superconductor
• Vortex liquid crystals in anisotropic type II superconductors
• Comment on "Vortex Liquid Crystal in Anisotropic Type II Superconductors"
• Flux-lattice melting in LaO${}_{1-x}$F${}_x$FeAs: first-principles prediction
• Elastic theory for the vortex-lattice melting in iron-based high-Tc superconductors