Acoustoelectric effect in two-dimensional Dirac materials exposed to Rayleigh surface acoustic waves
arXiv:2008.11346 · doi:10.1103/PhysRevB.102.235405
Abstract
We study the acoustoelectric effect in two-dimensional materials like transition metal dichalcogenide monolayers located on a non-piezoelectric substrate and exposed to the Rayleigh surface acoustic waves. We investigate the behavior of the Hall component of the electric current density which appears due to the trigonal warping of the valleys in k-space. We calculate the spectrum of the current density and study its dependence on the electron effective lifetime and density in the sample. We distinguish between the drift and diffusive components of the current and show, which components turn out predominant. Furthermore, we compare the effect of the Rayleigh and Bluestein-Gulyaev acoustic waves, which appear if the sample is located on a piezoelectric substrate.
arXiv comment8 pages, 4 figures
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Cited by in corpus (8)
- Acousto-magnonic spin Hall effect in honeycomb antiferromagnets
- Valley spin-acoustic resonance in MoS monolayers
- Valley transport driven by dynamic lattice distortion
- Optical valleytronics of impurity states in two-dimensional Dirac materials
- Quantum Nonlinear Acoustic Hall Effect and Inverse Acoustic Faraday Effect in Dirac Insulators
- Role of Coulomb interaction in the valley photogalvanic effect
- Renormalization of the valley Hall conductivity due to interparticle interaction
- Surface acoustic wave driven acoustic spin splitter in d-wave altermagnetic thin films