Quasiparticle spectrum of a type-II superconductor in a high magnetic field with randomly pinned vortices

Details Quasiparticle spectrum of a type-II superconductor in a high magnetic field with randomly pinned vortices Quasiparticle spectrum of a type-II superconductor in a high magnetic field with randomly pinned vortices

1999-05-13

arxiv.org/abs/cond-mat/9905180v1

Phys. Rev. B 59, 8436 (1999)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.59.8436

We show that gapless superconductivity of a strongly type-II superconductor in a high magnetic field prevails in the presence of disorder, suggesting a topological nature. We calculate the density of states of the Bogoliubov-de Gennes quasiparticles for a two-dimensional inhomogeneous system in both cases of weak and strong disorder. In the limit of very weak disorder, the effect is very small and the density of states is not appreciably changed. As the disorder increases, the density of states at low energies increases and the ratio of the low-energy density of states to its maximum increases significantly.

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