Topological transitions in electronic spectra: Crossover between Abrikosov and Josephson vortices
arXiv:2008.07563 · doi:10.1103/PhysRevB.102.174501
Abstract
The electronic structure of a vortex line trapped by a planar defect in a type-II superconductor is analyzed within the Bogoliubov-de Gennes theory. The normal reflection of electrons and holes at the defect plane results in the topological transition in the spectrum and formation of a new type of quasiparticle states skipping or gliding along the defect. This topological transition appears to be a hallmark of the initial stage of the crossover from the Abrikosov to the Josephson vortex type revealing in the specific behavior of the quantized quasiparticle levels and density of states. The increase in the resulting hard and soft gaps affects the vortex mobility along the defect plane and splitting of the zero bias anomaly in the tunneling spectral characteristics.
arXiv comment11 pages, 8 figures
References in corpus (24)
- The electronic properties of graphene
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Colloquium: Graphene spectroscopy
- Superconducting density of states and vortex cores of 2H-NbS2
- Robustness of Majorana fermions in 2D topological superconductors
- Flux-flow in d-wave superconductors: Low temperature universality and scaling
- Flux flow of Abrikosov-Josephson vortices along grain boundaries in high-temperature superconductors
- Anomalous Josephson current via Majorana bound states in topological insulators
- Singularity of the Vortex Density of States in d-wave Superconductors
- Majorana fermions in pinned vortices
- Tunneling spectrum of a pinned vortex with a robust Majorana state
- Resistance of Layered Superclean Superconductors at Low Temperatures
- Majorana state on the surface of a disordered 3D topological insulator
- Shape and Motion of Vortex Cores in Bi_2Sr_2CaCu_2O_{8+δ}
- Anomalous flux-flow dynamics in layered type-II superconductors at low temperatures
- Local density of states around single vortices and vortex pairs: effect of boundaries and hybridization of vortex core states
- Electronic Structure of Vortices Pinned by Columnar Defects
- Giant oscillations of energy levels in mesoscopic superconductors
- Enhanced vortex heat conductance in mesoscopic superconductors
- Resonant absorption at the vortex-core states in d-wave superconductors
- Theory of Scanning Tunneling Spectroscopy of Magnetic-Field-Induced Discrete Nodal States in a D-Wave Superconductor
- Single-electron transport through the vortex core levels in clean superconductors
- Abrikosov vortex escape from a columnar defect as a topological electronic transition in vortex core
- Vortex viscosity in the moderately clean limit of layered superconductors