Spin-orbit coupling induced valley Hall effects in transition-metal dichalcogenides

Abstract

In transition-metal dichalcogenides, electrons in the K-valleys can experience both Ising and Rashba spin-orbit couplings. In this work, we show that the coexistence of Ising and Rashba spin-orbit couplings leads to a special type of valley Hall effect, which we call spin-orbit coupling induced valley Hall effect. Importantly, near the conduction band edge, the valley-dependent Berry curvatures generated by spin-orbit couplings are highly tunable by external gates and dominate over the intrinsic Berry curvatures originating from orbital degrees of freedom under accessible experimental conditions. We show that the spin-orbit coupling induced valley Hall effect is manifested in the gate dependence of the valley Hall conductivity, which can be detected by Kerr effect experiments.

5 pages, 3 figures. Comments are welcome

References in corpus (16)

• The Valley Hall Effect in MoS2 Transistors
• Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
• Breaking of valley degeneracy by magnetic field in monolayer MoSe2
• Detecting Topological Currents in Graphene Superlattices
• Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe2
• Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 Monolayers
• Strong Rashba-Edelstein Effect-Induced Spin-Orbit Torques in Monolayer Transition-Metal Dichalcogenide/Ferromagnet Bilayers
• Valley Magnetoelectricity in Single-Layer MoS2
• Possible Topological Superconducting Phases of MoS${}_2$
• Strong electron-hole symmetric Rashba spin-orbit coupling in graphene/monolayer transition metal dichalcogenide heterostructures
• Unconventional superconductivity in bilayer transition metal dichalcogenides
• Enhancement of the upper critical field in disordered transition metal dichalcogenide monolayers
• Microscopic Origin of the Valley Hall Effect in Transition Metal Dichalcogenides Revealed by Wavelength Dependent Mapping
• Valley Edelstein Effect in Monolayer Transition Metal Dichalcogenides

Cited by in corpus (26)

• Intrinsic orbital moment and prediction of a large orbital Hall effect in the 2D transition metal dichalcogenides
• Nonequilibrium Lattice Dynamics in Monolayer MoS2
• Highly tunable nonlinear Hall effects induced by spin-orbit couplings in strained polar transition-metal dichalcogenides
• The valley Nernst effect in WSe${}_2$
• Direct view of phonon dynamics in atomically thin MoS${}_2$
• Ultralow Schottky Barriers in hBN-Encapsulated Monolayer WSe${}_2$ Tunnel Field-Effect Transistors
• Kapitza-resistance-like exciton dynamics in atomically flat MoSe${}_2$-WSe${}_2$ lateral heterojunction
• Edge magnetism in transition metal dichalcogenide nanoribbons: Mean field theory and determinant quantum Monte Carlo
• Moiré flat Chern bands and correlated quantum anomalous Hall states generated by spin-orbit couplings in twisted homobilayer MoS${}_2$
• Berry curvature, spin Hall effect and nonlinear optical response in moiré transition metal dichalcogenide heterobilayers
• Electrically tunable and reversible magnetoelectric coupling in strained bilayer graphene
• Interlayer Coupling Induced Quasiparticles
• Tunneling valley Hall effect induced by coherent geometric phase
• Effectuating tunable valley selection via multi-terminal monolayer graphene devices
• Inducing chiral superconductivity on honeycomb lattice systems
• Ultrafast Phonon-Diffuse Scattering as a Tool for Observing Chiral Phonons in Monolayer Hexagonal Lattices
• Strong Effects of Interlayer Interaction on Valence-Band Splitting in Transition Metal Dichalcogenides
• Engineering spin-orbit effects and Berry curvature by deposition of Eu on WSe${}_2$
• Optically induced spin Hall current in Janus transition-metal dichalcogenides
• Control of valley optical conductivity and topological phases in buckled hexagonal lattice by orientation of in-plane magnetic field
• Unidirectional Seebeck effect from Rashba spin-orbit coupling on the subsurface of Ge(111)
• Directing Monolayer Tungsten Disulfide Photoluminescence using a Bent Plasmonic Nanowire on a Mirror Cavity
• Renormalization of the optical band gap through an effective Thirring interaction for massive Dirac-like electrons
• Current-induced re-entrant superconductivity and extreme nonreciprocal superconducting diode effect in valley-polarized systems
• Intrinsic Nernst Effect from Berry Curvature in Superconductors
• Electric spin and valley Hall effects