Strain-induced nonlinear spin Hall effect in topological Dirac semimetal

Abstract

We show that an electric field applied to a strained topological Dirac semimetal, such as Na3Bi and Cd3As2, induces a spin Hall current that is quadratic in the electric field. By regarding the strain as an effective "axial magnetic field" for the Dirac electrons, we investigate the electron and spin transport semiclassically in terms of the chiral kinetic theory. The nonlinear spin Hall effect arises as the cross effect between the regular Hall effect driven by the axial magnetic field and the anomalous Hall effect coming from the momentum-space topology. It provides an efficient way to generate a fully spin-polarized and rectified spin current out of an alternating electric field, which is sufficiently large and can be directly tuned by the gate voltage and the strain.

6 pages, 1 figure + 5 pages of Supplemental Information

References in corpus (16)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Dissipationless Quantum Spin Current at Room Temperature
• Direct electronic measurement of the spin Hall effect
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Semiclassical theory of nonlinear magneto-optical responses with applications to topological Dirac/Weyl semimetals
• Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
• Inhomogeneous Weyl and Dirac semimetals: Transport in axial magnetic fields and Fermi arc surface states from pseudo Landau levels
• Nonlinear valley and spin currents from Fermi pocket anisotropy in 2D crystals
• Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems
• Consistent Chiral Kinetic Theory in Weyl Materials: Chiral Magnetic Plasmons
• Topological responses from chiral anomaly in multi-Weyl semimetals
• Quantum oscillations without magnetic field
• Universal charge and current on magnetic domain walls in Weyl semimetals
• Dirac semimetals $A_{3}Bi$ ($A$=Na,K,Rb) as $Z_2$ Weyl semimetals
• Chiral Anomaly and Second Harmonic Generation in Weyl Semimetals
• Origin of Bardeen-Zumino current in lattice models of Weyl semimetals

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• Unveiling the mechanism of bulk spin-orbit torques within chemically disordered Fe${}_x$Pt${}_{1-x}$ single layers
• Observation of Nonlinear Spin-Charge Conversion in the Thin Film of Nominally Centrosymmetric Dirac Semimetal SrIrO3 at Room Temperature
• Interaction-Enhanced Topological Hall Effects in Strained Twisted Bilayer Graphene
• Acoustoelectric effect in two-dimensional Dirac materials exposed to Rayleigh surface acoustic waves
• Spin Hall conductivity in topological Dirac semimetals
• Theory of Nonlinear Response for Charge and Spin Currents
• Non-Linear Hall Effect in Multi-Weyl Semimetals
• Anisotropic linear and nonlinear charge-spin conversion in topological semimetal SrIrO3
• Electric field induced second-order anomalous Hall transport in unconventional Rashba systems
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• General solution for the response of materials under radiation and tilted magnetic field: semi-classical regime