Magnus spin Hall and spin Nernst effects in gapped 2D Rashba systems

Abstract

We study the Magnus transport in a gapped 2D electron gas with Rashba spin-orbit coupling using semiclassical Boltzmann transport formalism. Apart from its signature in the charge transport coefficients, the inclusion of Magnus velocity in the spin current operator enables us to study Magnus spin transport in the system. In particular, we study the roles of mass gap and Fermi surface topology on the behavior of Magnus Hall and Nernst conductivities and their spin counterparts. We find that the Magnus spin Hall conductivity vanishes in the limit of zero gap, unlike the universal spin Hall conductivity ${\sigma }_s=e/(8\pi )$. The Magnus spin currents with spin polarization perpendicular to the applied bias (electrical/thermal) are finite while with polarization along the bias vanishes. Each Magnus conductivity displays a plateau as Fermi energy sweeps through the gap and has peaks (whose magnitudes decrease with the gap) when the Fermi energy is at the gap edges.

arXiv commentTo be appeared in Phys. Rev. B

References in corpus (40)

• Berry Phase Effects on Electronic Properties
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Anomalous Hall effect
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Valley contrasting physics in graphene: magnetic moment and topological transport
• Universal Intrinsic Spin-Hall Effect
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• The Valley Hall Effect in MoS2 Transistors
• Topological Materials: Weyl Semimetals
• Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
• The electronic properties of bilayer graphene
• Quantum nonlinear Hall effect induced by Berry curvature dipole in time-reversal invariant materials
• Hexagonal Warping Effects in the Surface States of Topological Insulator Bi${}_2$Te${}_3$
• Topological nature of nonlinear optical effects in solids
• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Intrinsic Spin and Orbital Hall Effects from Orbital Texture
• Electronic properties of graphene-based bilayer systems
• Discovery of Weyl fermion semimetals and topological Fermi arc states
• On A Proper Definition of Spin Current
• Semiclassical theories of the anomalous Hall effect
• Anomalous Nernst Effect in Dirac Semimetal Cd3As2
• Observation of the spin Nernst effect
• Berry curvature dipole current in transition metal dichalcogenides family
• The definition of the spin current: The angular spin current and its physical consequences
• The angular spin current and its physical consequences
• Anomalous Hall effect in paramagnetic two dimensional systems
• Symmetry and Quantum Kinetics of the Non-linear Hall Effect
• The Spin Nernst effect in Tungsten
• Persistent spin current in nano-devices and definition of the spin current
• Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems
• Thermally driven pure spin and valley current via anomalous Nernst effect in monolayer group-VI dichalcogenides
• Two-dimensional orbital Hall insulators
• Magnus Hall Effect
• Consistency in Formulation of Spin Current and Torque Associated with a Variance of Angular Momentum
• Mechanical measurement of equilibrium spin currents in the Rashba medium
• Magnus Nernst and thermal Hall effect
• Topological Magnus responses in two and three dimensional systems
• Role of Berry curvature in the generation of spin currents in Rashba systems
• Photoinduced helical metal and magnetization in two-dimensional electron systems with spin-orbit coupling

Cited by in corpus (1)

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