Acoustomagnetoelectric effect in two-dimensional materials: Geometric resonances and Weiss oscillations
| Autor: | Ivan Savenko, Lev G. Mourokh, A. V. Kalameitsev, V. M. Kovalev |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Superlattice Surface acoustic wave Semiclassical physics FOS: Physical sciences 02 engineering and technology Acoustic wave 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field symbols.namesake 0103 physical sciences Boltzmann constant Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols Electric current 010306 general physics 0210 nano-technology Fermi gas |
| Popis: | We study electron transport in two-dimensional materials with parabolic and linear (graphene) dispersions of the carriers in the presence of surface acoustic waves and an external magnetic field using semiclassical Boltzmann equations approach. We observe an oscillatory behavior of both the longitudinal and Hall electric currents as functions of the surface acoustic wave frequency at a fixed magnetic field and as functions of the inverse magnetic field at a fixed frequency of the acoustic wave. We explain the former by the phenomenon of geometric resonances, while we relate the latter to the Weiss-like oscillations in the presence of the dynamic superlattice created by the acoustic wave. Thus we demonstrate the dual nature of the acoustomagnetoelectric effect in two-dimensional electron gas. Manuscript: 9 pages, 2 figures |
| Databáze: | OpenAIRE |
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