Polarity tuning of spin-orbit-induced spin splitting in two-dimensional transition metal dichalcogenides semiconductors

Abstract

The established spin splitting in monolayer (ML) of transition metal dichalcogenides (TMDs) that is caused by inversion symmetry breaking is dictated by mirror symmetry operations to exhibit fully out-of-plane direction of spin polarization. Through first-principles density functional theory calculations, we show that polarity-induced mirror symmetry breaking leads to new sizable spin splitting having in-plane spin polarization. These splittings are effectively controlled by tuning the polarity using biaxial strain. Furthermore, the admixtures of the out-of-plane and in-plane spin-polarized states in the strained polar systems are identified, which is expected to influence the spin relaxation through the Dyakonov-Perel mechanism. Our study clarified that the polarity-induced mirror symmetry breaking plays an important role in controlling the spin splitting and spin relaxation in the TMDs ML, which is useful for designing future spintronic devices.

arXiv comment5 Figures

References in corpus (28)

• Electric Field Effect in Atomically Thin Carbon Films
• Quantum Spin Hall Effect in Graphene
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Two and one-dimensional honeycomb structures of silicon and germanium
• Quantum Spin Hall Effect in Silicene
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Three-band tight-binding model for monolayers of group-VIB transition metal dichalcogenides
• Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
• Hexagonal Warping Effects in the Surface States of Topological Insulator Bi${}_2$Te${}_3$
• Large spin splitting in the conduction band of transition metal dichalcogenide monolayers
• Magnetoelectric effects and valley controlled spin quantum gates in transition metal dichalcogenide bilayers
• Long-lived nanosecond spin relaxation and spin coherence of electrons in monolayer MoS_2 and WS_2
• Opto-Valleytronic Spin Injection in Monolayer MoS2/Few-Layer Graphene Hybrid Spin Valves
• 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
• Electronic structure, spin-orbit coupling, and interlayer interaction in bulk MoS2 and WS2
• Higher-order contributions to the Rashba-Bychkov effect with application to Bi/Ag(111) surface alloy
• Quantum Spin Hall Effect and Topological Phase Transition in Two-Dimensional Square Transition Metal Dichalcogenides
• Gate-tunable black phosphorus spin valve with nanosecond spin lifetimes
• Role of Strain on Electronic and Mechanical Response of Semiconducting Transition-Metal Dichalcogenide Monolayers: an ab-initio study
• Valley Contrasting Magnetoluminescence in Monolayer MoS${}_2$ Quantum Hall Systems
• Quantum transport and observation of Dyakonov-Perel spin-orbit scattering in monolayer MoS${}_2$
• Observation of intervalley quantum interference in epitaxial monolayer WSe2
• Electric field-driven coherent spin reorientation of optically generated electron spin packets in InGaAs
• Strain-controlled spin splitting in the conduction band of monolayer WS2
• Persistent spin helix on a wurtzite ZnO(10-10) surface: First-principles density-functional study

Cited by in corpus (11)

• Intrinsic persistent spin helix in two-dimensional group-IV monochalcogenide MX (M : Sn, Ge; X: S, Se, Te) monolayer
• Strong Rashba effect in the localized impurity states of halogen-doped monolayer PtSe2
• Strain Anisotropy Driven Spontaneous Formation of Nanoscrolls from Two-Dimensional Janus Layers
• Doping-induced persistent spin helix with large spin splitting in monolayer SnSe
• Reversible giant out-of-plane Rashba effect in two-dimensional Ga$XY$ ($X$= Se, Te; $Y$= Cl, Br, I) compounds for persistent spin helix
• Large band splitting with tunable spin polarization in two-dimensional ferroelectric GaXY (X= Se, Te; Y= Cl, Br, I) family
• Visualizing giant ferroelectric gating effects in large-scale WSe${}_2$/BiFeO${}_3$ heterostructures
• Full-zone Persistent Spin Textures with Giant Spin Splitting in Two-dimensional Group IV-V Compounds
• Controlling the Superconducting Transition by Rotation of an Inversion Symmetry-Breaking Axis
• Reversible canted persistent spin textures with large spin splitting in two-dimensional ferroelectric bilayer WTe${}_2$
• Reversible engineering the spin-orbit coupling of monolayer MoS2 via laser irradiation under controlled gas atmospheres