Star-Shaped Local Density of States around Vortices in a Type-II Superconductor
- Department of Physics, Okayama University, Okayama 700 (Japan)
The electronic structure of vortices in a type II superconductor is analyzed within the quasiclassical Eilenberger framework. The possible origin of a sixfold {open_quote}{open_quote}star{close_quote}{close_quote} shape of the local density of states, observed by scanning tunneling microscope (STM) experiments on NbSe{sub 2}, is examined in the light of the three effects: the anisotropic pairing, the vortex lattice, and the anisotropic density of states at the Fermi surface. Outstanding features of split parallel rays of this star are well explained in terms of an anisotropic {ital s}-wave pairing. This reveals not only a rich internal electronic structure associated with a vortex core, but also unique ability of the STM spectroscopy. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 389401
- Journal Information:
- Physical Review Letters, Vol. 77, Issue 19; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Self-consistent electronic structure of a vortex line in a type-II superconductor
Local spin-density-wave order inside vortex cores in multiband superconductors