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

A.E. Koshelev; Alexandre Avraamovitch Golubov

doi:10.1103/PhysRevLett.90.177002

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

A.E. Koshelev, Alexandre Avraamovitch Golubov

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic › peer-review

117 Citations (Scopus)

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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 language	Undefined
Pages (from-to)	177002-
Number of pages	4
Journal	Physical review letters
Volume	90
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.90.177002
Publication status	Published - 2003

Keywords

IR-40677
METIS-213629

Access to Document

10.1103/PhysRevLett.90.177002

mixed_state

Cite this

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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.",

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AU - Golubov, Alexandre Avraamovitch

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AB - 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.

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DO - 10.1103/PhysRevLett.90.177002

M3 - Article

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