Shift charge and spin photocurrents in Dirac surface states of topological insulator

Abstract

The generation of photocurrent in condensed matter is of main interest for photovoltaic and optoelectronic applications. Shift current, a nonlinear photoresponse, has attracted recent intensive attention as a dominant player of bulk photovoltaic effect in ferroelectric materials. In three dimensional topological insulators ${\text{Bi}}_2{\text{X}}_3$ (X: Te, Se), we find that Dirac surface states with a hexagonal warping term carry shift current by linearly polarized light. In addition, shift spin-current is introduced with the time-reversal symmetry breaking perturbation. The estimate for the magnitudes of the shift charge- and spin-currents are 0.13$I_0$ and 0.21$I_0$(nA/m) with the intensity of light $I_0$ measured in $(\text{W}/{\text{m}}^2)$, respectively, which can offer a useful method to generate these currents efficiently.

arXiv comment12 pages including supplementary information, 2 figures

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• Nonlinear Hall Effects
• Low-frequency divergence and quantum geometry of the bulk photovoltaic effect in topological semimetals
• Topology and geometry under the nonlinear electromagnetic spotlight
• Nonreciprocal charge transport in two-dimensional noncentrosymmetric superconductors
• Transport in two-dimensional topological materials: recent developments in experiment and theory
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• Pure Spin Photocurrent in Non-centrosymmetric Crystals: Bulk Spin Photovoltaic Effect
• Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems
• Resonant photovoltaic effect in doped magnetic semiconductors
• Nonreciprocal current from electron interactions in noncentrosymmetric crystals: roles of time reversal symmetry and dissipation
• Revealing Quantum Geometry in Nonlinear Quantum Materials
• Intrinsic Fermi Surface Contribution to the Bulk Photovoltaic Effect
• Geometric aspects of nonlinear and nonequilibrium phenomena
• Floquet-Theoretical Formulation and Analysis of High-Harmonic Generation in Solids
• Theory of current-driven dynamics of spin textures on a surface of topological insulators
• Quantum Kinetic Theory of Nonlinear Optical Currents: Finite Fermi surface and Fermi sea contributions
• A comprehensive theory of second-order spin photocurrents
• Linear photogalvanic effect in surface states of topological insulators
• Shift current from electromagnon excitations in multiferroics
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• Nonlinear photoconductivities and quantum geometry of chiral multifold fermions
• Non-equilibrium nature of non-linear optical response: Application to the bulk photo voltaic effect
• Abnormal Surface Nonlinear Optical Responses in Topological Materials
• Fundamental Distinction between Intrinsic and Extrinsic Nonlinear Thermal Hall Effects
• Surface photogalvanic effect in Weyl semimetals
• Dynamical Quantum Anomalous Hall Effect in Strong Optical Fields
• Bulk photovoltaic effects in altermagnets
• Intrinsic Contribution to Non-linear Thermoelectric Effect
• Unidirectional valley-contrasting photo-current in strained transition metal dichalcogenide monolayers
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Bulk-Fermi-Arc Transition Induced Large Photogalvanic Effect in Weyl Semimetals
• Berry-electrodynamics - Anomalous drift and pumping from time-dependent Berry connection
• Optical spin conductivity in ultracold quantum gases
• Diverging shift current responses in the gapless limit of two-dimensional systems
• Quantum geometry and $X$-wave magnets with $X=p,d,f,g,i$
• Terahertz spin ratchet effect in magnetic metamaterials
• Realizing a topological diode effect on the surface of a topological Kondo insulator
• Higher-order bulk photovoltaic effects, quantum geometry and application to $p$-wave magnets
• Precise determination of critical points of topological phase transitions via shift current in two-dimensional inversion asymmetric insulators
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• Quadrupolar photovoltaic effect in the terahertz range in a two-dimensional spin-3/2 hole system
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