Vortex core shrinkage in a two gap superconductor: Application to MgB2
| Autor: | S Graser, Thomas Dahm, Nils Schopohl, A. Gumann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Superconductivity
Physics Condensed matter physics Kramer-Pesch effect Band gap Condensed Matter - Superconductivity Energy Engineering and Power Technology FOS: Physical sciences Tourbillon Condensed Matter Physics Electronic Optical and Magnetic Materials Coherence length Vortex vortex core Superconductivity (cond-mat.supr-con) chemistry.chemical_compound chemistry magnesium diboride Condensed Matter::Superconductivity Magnesium diboride Electrical and Electronic Engineering Electronic band structure Coherence (physics) |
| Popis: | As a model for the vortex core in MgB2 we study a two band model with a clean sigma band and a dirty pi band. We present calculations of the vortex core size in both bands as a function of temperature and show that there exists a Kramer-Pesch effect in both bands even though only one of the bands is in the clean limit. We present calculations for different pi band diffusivities and coherence lengths. Comment: Submitted to M2S-HTSC-VIII conference proceedings |
| Databáze: | OpenAIRE |
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