Abstract
Based on the quasiclassical theory, we investigate the vortex state in a two-band superconductor with a small gap on a three-dimensional Fermi surface and a large gap on a quasi-two dimensional one, as in MgB2. The field dependence of zero-energy density of states is compared for fields parallel and perpendicular to the ab plane, and the anisotropy of the vortex core shape is discussed for a parallel field. The Fermi surface geometry of two bands, combining the effect of the normal-like electronic state on the small gap band at high fields, produces characteristic behavior in the anisotropy of c and ab directions.
| Original language | English |
|---|---|
| Article number | 144508 |
| Pages (from-to) | 144508-1-144508-6 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 70 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Oct 1 2004 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Ichioka, M., Machida, K., Nakai, N., & Miranović, P. (2004). Electronic state around vortex in a two-band superconductor. Physical Review B - Condensed Matter and Materials Physics, 70(14), 144508-1-144508-6. [144508]. https://doi.org/10.1103/PhysRevB.70.144508