Anisotropic s-wave superconductivity in MgB_2

Abstract

It has recently been observed that MgB_2 is a superconductor with a high transition temperature. Here we propose a model of anisotropic s-wave superconductivity which consistently describes the observed properties of this compound, including the thermodynamic and optical response in sintered MgB_2 wires. We also determine the shape of the quasiparticle density of states and the anisotropy of the upper critical field and the superfluid density which should be detectable once single-crystal samples become available.

RevTex, 10 pages with 4 eps figures

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Cited by in corpus (30)

• Temperature and field dependence of the anisotropy of MgB2
• Single crystal MgB2 with anisotropic superconducting properties
• Thermal conductivity of single crystalline MgB_2
• Mixed state properties of superconducting MgB2 single crystals
• A review of two-band superconductivity: materials and effects on the thermodynamic and reversible mixed-state properties
• Elaboration of the alpha-Model Derived from the BCS Theory of Superconductivity
• Temperature dependence and anisotropy of the bulk upper critical field H_c2 of MgB_2
• Ansiotropic s- wave superconductivity in borocarbides LuNi2B2C and YNi2B2C
• Orbital upper critical field of type-II superconductors with pair breaking
• Muon-spin-relaxation study of the magnetic penetration depth in MgB2
• Energy gap, penetration depth and surface resistance of MgB2 thin films determined by microwave resonator mesurements
• Spectrum of low energy excitations in the vortex state: comparison of Doppler shift method to quasiclassical approach
• Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2
• Far-infrared transmission studies of c-axis oriented superconducting MgB2 thin film
• Strongly Anisotropic s-Wave Gaps in Exotic Superconductors
• Anisotropic s-wave superconductivity: comparison with experiments on MgB2 single crystals
• Specific Heat Study of the Magnetic Superconductor HoNi2B2C
• Superconducting energy gap in MgB2 film observed by infrared reflectance
• Specific Heat Discontinuity in Impure Two-Band Superconductors
• Hc2 of anisotropy two-band superconductors by Ginzburg-Landau approach
• The Critical Magnetic Field of Anisotropic Two-Band Magnetic Superconductors
• The superconducting gap of \QTR{em}{in situ} $Mg{B}_2$ thin films by microwave surface impedance measurements
• Critical Magnetic Field Ratio of Anisotropic Magnetic Superconductors
• Comment on "Anisotropic s-wave superconductivity in MgB_2"
• Inhomogeneous superconductivity in LuxZr1-xB12 dodecaborides with dynamic charge stripes
• Heat capacity of mesoscopically disordered superconductors:implications to MgB${}_2$
• Pseudogap and Conduction Dimensionalities in High-T_c Superconductors
• Investigate the effect of anisotropic order parameter on the specific heat of anisotropic two-band superconductors
• Orbital-dependent two-band superconductivity in MgB2
• The study on penetration depth of anisotropic two-band s-wave superconductors by Ginzburg-Landau approach