Raman Photogalvanic Effect: photocurrent at inelastic light scattering

Abstract

We show theoretically that electromagnetic waves propagating in the transparency region of a non-centrosymmetric medium can induce a dc electric current. The origin of the effect is the Raman scattering of light by free carriers in the system. Due to the photon scattering, electrons undergo real quantum transitions resulting in the formation of their anisotropic momentum distribution and in shifts of electronic wavepackets giving rise to a steady state photocurrent. We present microscopic theory of the Raman Photogalvanic effect (RPGE) focusing on two specific situations: (i) generic case of a bulk gyrotropic semiconductor and (ii) a quantum well structure where the light is scattered by intersubband excitations. We uncover the relation of the predicted RPGE and the traditional photogalvanic effect at the light absorption.

4+2 pages, 3 figures + SI

References in corpus (7)

• Ballistic and shift currents in the bulk photovoltaic effect theory
• Fast detector of the ellipticity of infrared and terahertz radiation based on HgTe quantum well structures
• Semiclassical theory of the circular photogalvanic effect in gyrotropic systems
• High-frequency nonlinear transport and photogalvanic effects in two-dimensional topological insulators
• Nonlinear intensity dependence of terahertz edge photocurrents in graphene
• All-electric detectors of the polarization state of terahertz laser radiation (extended version)
• Edge photocurrent in bilayer graphene due to inter-Landau-level transitions

Cited by in corpus (7)

• Revealing Quantum Geometry in Nonlinear Quantum Materials
• The Berry dipole photovoltaic demon and the thermodynamics of photo-current generation within the optical gap of metals
• Quantum Kinetic Theory of Nonlinear Optical Currents: Finite Fermi surface and Fermi sea contributions
• The Fermi-Dirac staircase occupation of Floquet bands and current rectification inside the optical gap of metals: a rigorous perspective
• Magnetic parity violation and parity-time-reversal-symmetric magnets
• Light-induced Nonlinear Spin Hall Current in Single-layer WTe${}_2$
• Ultra-critical Floquet Non-Fermi Liquid