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

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Koshelev, A.E. and Golubov, A.A. (2003) Mixed State of a Dirty Two-Band Superconductor: Application to MgB2. Physical Review Letters, 90 (17). p. 177002. ISSN 0031-9007

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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.
Item Type:Article
Copyright:© 2003 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/40677
Official URL:http://dx.doi.org/10.1103/PhysRevLett.90.177002
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Metis ID: 213629