Intrinsic Spin Hall Conductivity of MoTe2 and WTe2 Semimetals

Abstract

We report a comprehensive study on the intrinsic spin Hall conductivity (SHC) of semimetals MoTe2 and WTe2 by ab initio calculation. Large SHC and desirable spin Hall angles have been discovered, due to the strong spin orbit coupling effect and low charge conductivity in semimetals. Diverse anisotropic SHC values, attributed to the unusual reduced-symmetry crystalline structure, have been revealed. We report an effective method on SHC optimization by electron doping, and exhibit the mechanism of SHC variation respect to the energy shifting by the spin Berry curvature. Our work provides insights into the realization of strong spin Hall effects in 2D systems.

References in corpus (8)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Advanced capabilities for materials modelling with Quantum ESPRESSO
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
• Determination of intrinsic spin Hall angle in Pt
• Thickness dependence of spin-orbit torques generated by WTe2
• Anisotropic spin Hall effect from first principles
• Giant Enhancement of Intrinsic Spin Hall Conductivity in $\beta$ Tungsten via Substitutional Doping

Cited by in corpus (28)

• Roadmap of spin-orbit torques
• Large tunneling magnetoresistance in VSe2/MoS2 magnetic tunnel junction
• Unconventional spin Hall effects in nonmagnetic solids
• Magnetic asymmetry induced anomalous spin-orbit torque in IrMn
• Unconventional spin-orbit torque in transition metal dichalcogenide/ferromagnet bilayers from first-principles calculations
• Intrinsic spin Hall effect in topological insulators: A first-principles study
• Low-symmetry topological materials for large charge-to-spin interconversion: The case of transition metal dichalcogenide monolayers
• Interfacial magnetic spin Hall effect in van der Waals Fe3GeTe2/MoTe2 heterostructure
• Efficient Spin-Orbit Torque Generation in Semiconducting WTe2 with Hopping Transport
• Robust negative longitudinal magnetoresistance and spin-orbit torque in sputtered Pt3Sn topological semimetal
• Resolving spin currents and spin densities generated by charge-spin interconversion in systems with reduced crystal symmetry
• Gigantic Anisotropy of Self-Induced Spin-Orbit Torque in Weyl Ferromagnet Co2MnGa
• Switchable large-gap quantum spin Hall state in two-dimensional MSi${}_2$Z${}_4$ materials class
• Topological superconductivity and large spin Hall effect in the kagome family Ti6X4 (X = Bi, Sb, Pb, Tl, In)
• Optical induced Spin Current in Monolayer NbSe${}_2$
• Fast electrically switchable large gap quantum spin Hall states in MGe${}_2$Z${}_4$
• Charge-spin conversion signal in WTe2 van der Waals hybrid devices with a geometrical design
• High-throughput calculations of spin Hall conductivity in non-magnetic 2D materials
• Controllable Spin Current in van der Waals Ferromagnet Fe3GeTe2
• Strain-induced nonrelativistic altermagnetic spin splitting effect
• Spin-Hall effect in topological materials: Evaluating the proper spin current in systems with arbitrary degeneracies
• Field-free deterministic switching of a perpendicularly polarized magnet using unconventional spin-orbit torques in WTe2
• Staggered spin Hall conductivity
• Ferroelectric polarization controlled orbital Hall conductivity in a higher-order topological insulator: \textit{d1T}-phase monolayer MoS${}_2$
• Dichotomy of saddle points in energy bands of a monolayer NbSe${}_2$
• Enhanced Spin Hall Ratio in Two-Dimensional Semiconductors
• Nonlinear magnetotransport in MoTe${}_2$
• Direct observation of distinct bulk and edge nonequilibrium spin accumulation in ultrathin MoTe${}_2$