Physics:Acousto-electric effect
Acousto-electric effect is a nonlinear phenomenon of generation of electric current in a piezo-electric semiconductor by a propagating acoustic wave. The generated electric current is proportional to the intensity of the acoustic wave and to the value of its electron-induced attenuation. The effect was theoretically predicted in 1953 by Parmenter.[1] Its first experimental observation was reported in 1957 by Weinreich and White.[2]
Valley acoustoelectric effect
There are two varieties of the original acousto-electric effect called the valley acoustoelectric effect and valley acoustoelectric Hall effect theoretically predicted in 2019 by Kalameitsev, Kovalev, and Savenko.[3] These effects also represent nonlinear phenomena of generation of electric current in two-dimensional materials, such as transition metal dichalcogenide monolayers or graphene, located on a piezoelectric substrate by a propagating acoustic wave. The generated electric currents are proportional to the intensity of the acoustic wave and their directions are perpendicular to the acoustic wave vector.
See also
- Physical acoustics
- Semiconductors
- Piezoelectricity
- Elastic waves
References
- ↑ Parmenter, R. H. (1953). "The Acousto-Electric Effect". Physical Review 89 (5): 990–998. doi:10.1103/PhysRev.89.990. ISSN 0031-899X.
- ↑ Weinreich, Gabriel; White, Harry G. (1957). "Observation of the Acoustoelectric Effect". Physical Review 106 (5): 1104–1106. doi:10.1103/PhysRev.106.1104. ISSN 0031-899X.
- ↑ Kalameitsev, Alexander; Kovalev, Vadim; Savenko, Ivan (26 June 2019). "Valley Acoustoelectric Effect". Physical Review Letters 122 (25): 256801. doi:10.1103/PhysRevLett.122.256801. PMID 31347890. https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.122.256801. Retrieved 7 August 2019.
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