Penetration depth anisotropy in two-band superconductors

Abstract

The anisotropy of the London penetration depth is evaluated for two-band superconductors with arbitrary inter- and intra-band scattering times. If one of the bands is clean and the other is dirty in the absence of inter-band scattering, the anisotropy is dominated by the Fermi surface of the clean band and is weakly temperature dependent. The inter-band scattering also suppress the temperature dependence of the anisotropy.

References in corpus (18)

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• Evidence for two superconducting energy gaps in MgB2 by point-contact spectroscopy
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• Two-gap superconductivity in MgB${}_2$: clean or dirty?
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• Temperature and field dependence of the anisotropy of MgB2
• Multiband model for penetration depth in MgB2
• Evidence for Two-Band Superconductivity from Break Junction Tunneling on MgB2
• Nature of bonding and electronic structure in MgB2, a boron intercalation superconductor
• Macroscopic anisotropy in superconductors with anisotropic gaps
• Anisotropies of the lower and upper critical fields in MgB${}_2$ single crystals
• Toward one-band superconductivity in MgB2
• Super-conducting critical fields and anisotropy of a MgB2 single crystal
• Superconducting anisotropy and evidence for intrinsic pinning in single crystalline MgB${}_2$
• Two-band effects in transport properties of MgB2
• Critical Fields and Critical Currents in MgB2

Cited by in corpus (12)

• London Penetration Depth in Iron - based Superconductors
• Superfluid density and specific heat within self-consistent scheme for two-band superconductor
• Intrinsic pinning and the critical current scaling of clean epitaxial Fe(Se,Te) thin films
• Anisotropic London Penetration Depth and Superfluid Density in Single Crystals of Iron-based Pnictide Superconductors
• Strong magnetic pair breaking in Mn substituted MgB_2 single crystals
• Superconductivity of magnesium diboride
• Influence of Al doping on the critical fields and gap values in magnesium diboride single crystals
• Microwave Surface Impedance Measurements of LiFeAs Single Crystals
• Effective gap at microwave frequencies in MgB2 thin films with strong interband scattering
• Anisotropy and internal field distribution of MgB2 in the mixed state at low temperatures
• Interband coupling and transport interband scattering in $s_{\pm }$ superconductors
• Roles of intrinsic anisotropy and pi-band pairbreaking effects on critical currents in tilted c-axis MgB2 films probed by magneto-optical and transport measurements