Magnetic Field Driven Nodal Topological Superconductivity in Monolayer Transition Metal Dichalcogenides

Abstract

Recently, Ising superconductors which possess in-plane upper critical fields much larger than the Pauli limit field are under intense experimental study. Many monolayer or few layer transition metal dichalcogenides are shown to be Ising superconductors. In this work, we show that in a wide range of experimentally accessible regimes where the in-plane magnetic field is higher than the Pauli limit field but lower than $H_{c2}$, a 2H-structure monolayer NbSe${}_2$ or simiarly TaS${}_2$ becomes a nodal topological superconductor. The bulk nodal points appear on the $\Gamma -M$ lines of the Brillouin zone where the Ising SOC vanishes. The nodal points are connected by Majorana flat bands, similar to the Weyl points being connected by surface Fermi arcs in Weyl semimetals. The Majorana flat bands are associated with a large number of zero energy Majorana fermion edge modes which induce spin-triplet Cooper pairs. This work demonstrates an experimentally feasible way to realise Majorana fermions in nodal topological superconductor, without any fining tuning of experimental parameters.

5 pages, 4 figures, plus supplementary material. Comments are welcome

References in corpus (17)

• Valley polarization in MoS2 monolayers by optical pumping
• Classification of topological insulators and superconductors in three spatial dimensions
• Superconducting Spintronics
• Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
• Quantized Majorana conductance
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Enhanced superconductivity in atomically thin TaS2
• Classification of reflection symmetry protected topological semimetals and nodal superconductors
• Ising Superconductivity and Quantum Phase Transition in Macro-Size Monolayer NbSe2
• Ising Superconductivity and Majorana Fermions in Transition Metal Dichalcogenides
• Possible Topological Superconducting Phases of MoS${}_2$
• An unusual continuous paramagnetic-limited superconducting phase transition in 2D NbSe${}_2$
• Spin-valley locking in the normal state of a transition-metal dichalocogenide superconductor
• Electronic structure of two-dimensional crystals from ab-initio theory
• Topological zero modes and Dirac points protected by spatial symmetry and chiral symmetry
• Enhancement of the upper critical field in disordered transition metal dichalcogenide monolayers
• Generating Giant Spin Currents Using Nodal Topological Superconductors

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