Nonlinear circular valley photogalvanic effect
arXiv:2106.01600 · doi:10.1103/PhysRevB.104.075424
Abstract
We develop a theory of circular photogalvanic effect in non-gyrotropic two-dimensional transition metal dichalcogenide monolayers under interband optical transitions. Oblique incidence of circularly-polarized electromagnetic field or normal incidence of elliptically polarized electromagnetic field is assumed. In contrast to the linear-in-intensity conventional photogalvanic effect, the effect considered here arises in the second intensity order. The effect is conditioned by i) the predominant population of the valleys by the circular in-plane electromagnetic field component and ii) the direct drift of the photo-excited carriers by the linear-polarized in-plane electromagnetic field component in the presence of trigonal valley asymmetry.
arXiv comment7 pages, 2 figures
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Cited by in corpus (6)
- Photogalvanic transport in fluctuating Ising superconductors
- Nonlinear optical absorption and photocurrents in topological insulators
- Electron diffusion induced valley Hall effect and nonlinear galvanodiffusive transport in hexagonal 2D Dirac monolayer materials
- Role of Coulomb interaction in the valley photogalvanic effect
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