Odd-parity superconductivity in bilayer transition metal dichalcogenides

Abstract

Spin-orbit coupling in transition metal dichalcogenides (TMDCs) causes spin-valley locking giving rise to unconventional optical, transport, and superconducting properties. In this paper, we propose exotic superconductivity in bilayer group-IV TMDCs by symmetry control. The sublattice-dependent hidden spin-orbit coupling arising from local inversion symmetry breaking in the crystal structure may stabilize the odd-parity superconductivity by purely $s$-wave local pairing interaction. The stability of the odd-parity superconducting state depends on the bilayer stacking. The 2H${}_b$ stacking in MoX${}_2$ and WX${}_2$ (X =S, Se) favors the odd-parity superconductivity due to interlayer quantum interference. On the other hand, the odd-parity superconductivity is suppressed by the 2H${}_a$ stacking of NbSe${}_2$. Calculating the phase diagram of the tight-binding model derived from first principles band calculations, we conclude that the intercalated bilayer MoS${}_2$ and WS${}_2$ are candidates for a new class of odd-parity superconductors by spin-orbit coupling.

arXiv commentTo appear in Phys. Rev. B

References in corpus (58)

• Atomically thin MoS2: A new direct-gap semiconductor
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Control of valley polarization in monolayer MoS2 by optical helicity
• Valley polarization in MoS2 monolayers by optical pumping
• MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
• Proximity effects in superconductor-ferromagnet heterostructures
• The Valley Hall Effect in MoS2 Transistors
• Evidence of Ising pairing in superconducting NbSe${}_2$ atomic layers
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Three-band tight-binding model for monolayers of group-VIB transition metal dichalcogenides
• Two Dimensional Ising Superconductivity in Gated MoS${}_2$
• Odd-Parity Topological Superconductors: Theory and Application to Cu${}_x$Bi${}_2$Se${}_3$
• Gate-tunable Memristive Phenonmena Mediated by Grain Boundaries in Single Layer MoS2
• Electronic structures and theoretical modelling of two-dimensional group-VIB transition metal dichalcogenides
• Electrical Tuning of Valley Magnetic Moment via Symmetry Control
• Band structure of MoS_2, MoSe_2, and alpha-MoTe_2: Angle-resolved photoelectron spectroscopy and ab-initio calculations
• Superconductivity protected by spin-valley locking in ion-gated MoS2
• Hidden spin polarization in inversion-symmetric bulk crystals
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Effect of spin-orbit interaction on the excitonic effects in single-layer, double-layer, and bulk MoS2
• Large spin splitting in the conduction band of transition metal dichalcogenide monolayers
• Gate-induced Superconductivity in atomically thin MoS2 crystals
• Magnetoelectric effects and valley controlled spin quantum gates in transition metal dichalcogenide bilayers
• Spin-Layer Locking Effects in Optical Orientation of Exciton Spin in Bilayer WSe2
• Direct observation of spin-polarised bulk bands in an inversion-symmetric semiconductor
• Transport Theory of Monolayer Transition-Metal Dichalcogenides through Symmetry
• Topological superconductivity in monolayer transition metal dichalcogenides
• \textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides
• Topological superconductivity in bilayer Rashba system
• Ising Superconductivity and Majorana Fermions in Transition Metal Dichalcogenides
• Possible Topological Superconducting Phases of MoS${}_2$
• Ferromagnetism and Superconductivity in Uranium Compounds
• Quantum Spin Hall Effect in Two-dimensional Crystals of Transition Metal Dichalcogenides
• First-principles theory of field-effect doping in transition-metal dichalcogenides: Structural properties, electronic structure, Hall coefficient, and electrical conductivity
• Electrostatically Induced Superconductivity at the Surface of WS${}_2$
• Spintronics in MoS_2 monolayer quantum wires
• Locally Non-centrosymmetric Superconductivity in Multilayer Systems
• Pair-density wave states through spin-orbit coupling in multilayer superconductors
• Superconductivity and local non-centrosymmetricity in crystal lattices
• Interactions and superconductivity in heavily doped MoS2
• Unconventional superconductivity in bilayer transition metal dichalcogenides
• Order parameter and vortices in the superconducting Q-phase of CeCoIn5
• Anomalous Upper Critical Field in CeCoIn_5/YbCoIn_5 Superlattices with a Rashba-type Heavy Fermion Interface
• Phase Diagram of Electron Doped Dichalcogenides
• Controllable Rashba spin-orbit interaction in artificially engineered superlattices involving the heavy-fermion superconductor CeCoIn5
• Superconductivity in magnetic multipole states
• Topological Crystalline Superconductivity in Locally Non-centrosymmetric Multilayer Superconductors
• Superconducting dome in MoS2 and TiSe2 generated by quasiparticle-phonon coupling
• Two-Dimensional Valley Electrons and Excitons in Noncentrosymmetric 3R MoS${}_2$
• Complex-Stripe Phases Induced by Staggered Rashba Spin-Orbit Coupling
• Parity-Mixed Superconductivity in Locally Non-centrosymmetric System
• Yu-Shiba-Rusinov states and topological superconductivity in Ising paired superconductors
• Fate of Majorana modes in ${\mathrm{CeCoIn}}_5$/${\mathrm{YbCoIn}}_5$ superlattices -a test bed for reduction of topological classification-
• Interference of the Bloch phase in layered materials with stacking shifts
• Topological Yu-Shiba-Rusinov chain in monolayer transition-metal dichalcogenide superconductors
• Robust zero-energy bound states around a pair-density-wave vortex core in locally noncentrosymmetric superconductors

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• Clean 2D superconductivity in a bulk van der Waals superlattice
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• Tunneling spectroscopy of gate-induced superconductivity in MoS${}_2$
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• Tailoring $T_c$ by symmetry principles: The concept of Superconducting Fitness
• Robust parity-mixed superconductivity in disordered monolayer transition metal dichalcogenides
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• Even-odd parity transition in strongly correlated locally noncentrosymmetric superconductors : An application to CeRh${}_2$As${}_2$
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• Supercurrent-induced topological phase transitions
• Theory of superconductivity in hole-doped monolayer MoS${}_2$
• Mapping multi-valley Lifshitz transitions induced by field-effect doping in strained MoS2 nanolayers
• Superconductivity of anomalous pseudospin
• Laser-induced topological $s$-wave superconductivity in bilayer transition metal dichalcogenides
• Orbital effect on intrinsic superconducting diode effect
• Multiple odd-parity superconducting phases in bilayer transition metal dichalcogenides
• Pseudo-Ising superconductivity induced by $p$-wave magnetism
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Hybrid skyrmion and anti-skyrmion phases in polar $C_{4v}$ systems
• Bardasis-Schrieffer-like phase mode in a superconducting bilayer
• Superconducting meron phase in locally noncentrosymmetric superconductors
• Reciprocal and nonreciprocal paraconductivity in bilayer multiphase superconductors
• Extremely high upper critical field in BiCh${}_2$-based (Ch: S and Se) layered superconductor LaO${}_{0.5}$F${}_{0.5}$BiS${}_{2-x}$Se${}_x$ ($x$ = 0.22 and 0.69)
• Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh${}_2$As${}_2$
• Field resilient superconductivity in atomic layer crystalline materials