Surface effects in multiband superconductors. Application to MgB${}_2$

Abstract

Metals with many bands at the Fermi level can have different band dependent gaps in the superconducting state. The absence of translational symmetry at an interface can induce interband scattering and modify the superconducting properties. We dicuss the relevance of these effects to recent experiments in MgB${}_2$.

References in corpus (10)

• Superconductivity of metallic boron in MgB_2
• Boron Isotope Effect in Superconducting MgB${}_2$
• Superconductivity of MgB2: Covalent Bonds Driven Metallic
• Electron-phonon interaction in the normal and superconducting states of MgB2
• Specific heat in the superconducting and normal state (2-300 K, 0-16 Teslas), and magnetic susceptibility of the 38-K superconductor MgB2: evidence for a multicomponent gap
• Scanning Tunneling Spectroscopy in MgB2
• Tunneling spectroscopy in small grains of superconducting MgB2
• High-Resolution Photoemission Study of MgB2
• Hole Superconductivity in $Mg{B}_2$: a high $T_c$ cuprate without Cu
• Energy Gap from Tunneling and Metallic Sharvin Contacts onto MgB2: Evidence for a Weakened Surface Layer

Cited by in corpus (19)

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• Temperature dependence and anisotropy of the bulk upper critical field H_c2 of MgB_2
• Magnetic field dependence of the density of states in the multiband superconductor $\beta$-Bi${}_2$Pd
• Phonon-mediated anisotropic superconductivity in the Y and Lu nickel borocarbides
• Scanning Tunneling Spectroscopy in MgB 2
• Surface Contribution to the Superconducting Properties of MgB2 Single Crystals
• Zero-bias conductance peak in detached flakes of superconducting 2H-TaS${}_2$ probed by scanning tunneling spectroscopy
• Odd momentum pairing and superconductivity in vertical graphene heterostructures
• Anisotropic s-wave superconductivity: comparison with experiments on MgB2 single crystals
• Theory of the critical current in two-band superconductors with application to MgB2
• Superconducting energy gap in MgB2 film observed by infrared reflectance
• Scanning Tunneling Microscopy in the superconductor LaSb2
• Point-contact Andreev-reflection spectroscopy in segregation-free Mg_{1-x}Al_{x}B_2 single crystals up to x=0.32
• Boundary effects in two-band superconductors
• Surface states and their possible role in the superconductivity of MgB2
• Phase solitons and subgap excitations in two-band superconductors
• Heat capacity of mesoscopically disordered superconductors:implications to MgB${}_2$
• Spontaneous edge corner currents in $s+is$ superconductors and time reversal symmetry breaking surface states