Abstract
We study the electronic state around a half-quantum vortex (HQV) in a chiral p-wave superconductor based on a square lattice three band tight-binding model by means of the Bogoliubov-de Gennes theory. In particular, the spatial distribution of charge and spin currents are mainly discussed. This analysis shows that the spin current is strengthened between the neighboring HQVs, resulting in the energy cost for HQV formation.
Highlights
Non-integer quantum vortices are allowed in multicomponent superfluids or superconductors[1]
We study the electronic state around a half-quantum vortex (HQV) in a chiral pwave superconductor based on a square lattice three band tight-binding model by means of the Bogoliubov-de Gennes theory
As a first step, we investigate the distribution of spin current around a HQV in a chiral p-wave equal spin pairing superconducting state in a square lattice three band tight-binding model with the pairing interaction between nearest-neighbor sites based on the Bogoliubov-de Gennes (BdG) theory
Summary
Non-integer quantum vortices are allowed in multicomponent superfluids or superconductors[1]. We study the electronic state around a half-quantum vortex (HQV) in a chiral pwave superconductor based on a square lattice three band tight-binding model by means of the Bogoliubov-de Gennes theory. This analysis shows that the spin current is strengthened between the neighboring HQVs, resulting in the energy cost for HQV formation.
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