Chiral p-wave superconductivity in Sb(111) thin films close to Van Hove singularities

Abstract

We theoretically investigate the development of unconventional superconductivity in the Sb(111) thin film when its Fermi level is tuned to near type-II Van Hove singularities (VHS), which locate at non-time-reversal invariant momenta. Via patch renormalization group analysis, we show that the leading instability is a chiral p + ip-wave superconducting order. The origin of such pairing relies on the hexagonal structure of the VHS and strong spin-orbit coupling, resulting in the anisotropy of the electron-electron scattering to provide an attractive channel. Our study hence suggests that superconducting Sb thin films originated from VHS physics may host Majorana zero modes in the magnetic vortices and provides another application perspective to such material.

arXiv comment7 pages, 5 figures, accepted by Physical Review B

References in corpus (37)

• Topological Insulators
• Topological insulators and superconductors
• Fault-tolerant quantum computation by anyons
• Non-Abelian Anyons and Topological Quantum Computation
• Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
• Classification of topological insulators and superconductors in three spatial dimensions
• New directions in the pursuit of Majorana fermions in solid state systems
• Non-abelian statistics of half-quantum vortices in p-wave superconductors
• Periodic table for topological insulators and superconductors
• Topological Insulator Materials
• Renormalization Group Approach to Interacting Fermions
• First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
• Hexagonal Warping Effects in the Surface States of Topological Insulator Bi${}_2$Te${}_3$
• Surface States of the Topological Insulator Bi_{1-x}Sb_x
• Chiral superconductivity from repulsive interactions in doped graphene
• Chiral Topological Superconductor From the Quantum Hall State
• Scalar spin chirality and quantum Hall effect on a triangular lattice
• The spin quantum Hall effect in unconventional superconductors
• Resonating valence bonds and mean-field d-wave superconductivity in graphite
• Transmission of topological surface states through surface barriers
• Chiral d-wave superconductivity in doped graphene
• On edge states in superconductor with time inversion symmetry breaking
• Kohn-Luttinger superconductivity in graphene
• Fermi Surface and Anisotropic Spin-Orbit Coupling of Sb(111) studied by Angle-Resolved Photoemission Spectroscopy
• Possibility of High Tc Superconductivity in doped Graphene
• An Index Theorem for the Majorana Zero Modes in Chiral P-Wave Superconductors
• Superconductivity from weak repulsion in hexagonal lattice systems
• Pairing in graphene: A quantum Monte Carlo study
• Topological Odd-Parity Superconductivity at Type-II 2D Van Hove Singularities
• Renormalization group study of interaction-driven quantum anomalous Hall and quantum spin Hall phases in quadratic band crossing systems
• d+id'-wave Superconducting States in Graphene
• Spontaneous quantum Hall effect in quarter-doped Hubbard model on honeycomb lattice and its possible realization in quarter-doped graphene system
• Stable topological phases in a family of two-dimensional fermion models
• Magnetic and Kohn-Luttinger instabilities near a Van Hove singularity: monolayer versus twisted bilayer graphene
• Tunneling Gap as Evidence for Time-Reversal Symmetry Breaking at Surfaces of High-Temperature Superconductors
• Topological p+ip superconductivity in doped graphene-like single-sheet materials BC${}_3$
• Evidence for spin-triplet odd-parity superconductivity close to type-II van Hove singularities

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