Mixed State of a Dirty Two-Band Superconductor: Application to MgB2

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Abstract

We investigate the vortex state in a two-band superconductor with strong intraband and weak interband electronic scattering rates. Coupled Usadel equations are solved numerically, and the distributions of the pair potentials and local densities of states are calculated for two bands at different values of magnetic fields. The existence of two distinct length scales corresponding to different bands is demonstrated. The results provide qualitative interpretation of recent scanning tunneling microscopy experiments on vortex structure imaging in MgB2.
Original languageUndefined
Pages (from-to)177002-
Number of pages4
JournalPhysical review letters
Volume90
Issue number17
DOIs
Publication statusPublished - 2003

Keywords

  • IR-40677
  • METIS-213629

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