A Two-band Model for p-wave Superconductivity

Abstract

In this paper we study the effects of hybridization in the superconducting properties of a two-band system. We consider the cases that these bands are formed by electronic orbitals with angular momentum, such that, the hybridization $V(\mathbf{k})$ among them can be symmetric or antisymmetric under inversion symmetry. We take into account only intra-band attractive interactions in the two bands and investigate the appearance of an induced inter-band pairing gap. We show that (inter-band) superconducting orderings are induced in the total absence of attractive interaction between the two bands, which turns out to be completely dependent on the hybridization between them. For the case of antisymmetric hybridization we show that the induced inter-band superconductivity has a p-wave symmetry.

Published version

References in corpus (16)

• Fault-tolerant quantum computation by anyons
• Unpaired Majorana fermions in quantum wires
• Quantum Computing
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Majorana fermions in a tunable semiconductor device
• Evidence for two superconducting energy gaps in MgB2 by point-contact spectroscopy
• Specific Heat of Mg ^{11}B_2
• Two Gap State Density in MgB${}_2$: A True Bulk Property or A Proximity Effect?
• Specific heat in the superconducting and normal state (2-300 K, 0-16 Teslas), and magnetic susceptibility of the 38-K superconductor MgB2: evidence for a multicomponent gap
• Evidence for Two Superconducting Gaps in $Mg{B}_2$
• Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy
• Order parameter of MgB_2: a fully gapped superconductor
• Odd-frequency superconducting pairing in multi-band superconductors
• Properties of a two orbital model for oxypnictide superconductors: Magnetic order, B_2g spin-singlet pairing channel, and its nodal structure
• Multi-orbital bosons in bipartite optical lattices
• Mechanism for enhancement of superconductivity in multi-band systems with odd parity hybridization

Cited by in corpus (5)

• Finite Temperature Phase Diagrams of a Two-band Model of Superconductivity
• Influence of the symmetry of the hybridization on the critical temperature of multi-band superconductors
• Superfluid density, Josephson relation and pairing fluctuations in a multi-component fermion superfluid
• Incommensurate charge density wave on multiband intermetallic systems exhibiting competing orders
• Enhancing long-range order in disordered two-band s-wave superconductors