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

Abstract

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.

References in corpus (2)

• Extended Gapless Regions in Disordered d_{x^2-y^2}-Wave Superconductors
• Density of states of a type-II superconductor in a high magnetic field: Impurity effects

Cited by in corpus (4)

• Interplay of disorder and magnetic field in the superconducting vortex state
• Vortex spectroscopy in the vortex glass: A real-space numerical approach
• Low-Temperature Specific Heat of an Extreme-Type-II Superconductor at High Magnetic Fields
• Hall conductance of a pinned vortex lattice in a high magnetic field