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- W2079231879 abstract "The acoustoelectric effect in a superlattice (SL) is investigated for an acoustic wave whose wavelength $lambda =2pi/ q$ is smaller than the mean free path $l$ of the electrons and hypersound in the region $qlgg1$. (where $ q$ is the acoustic wave number) . A nonlinear dependence of the acoustoelectric current $j^{ac}$ on the constant electric field $E$ is obtained by using the classical Boltzmann kenetic equation. The analytical expression for the acoustoelectric current $j^{ac}$ is calculated for constant of momentum relaxation time. Numerical calculations is done, and the result is discussed for a typical GaAs/AlGaAs SL. It is noted that when the electric field is negative the current $j^{ac}$ decreases, reaches a minimum and rises. On the other hand, when the electric field is positive the current increases, reaches a maximum and then falls off. A similar observation has been noted for an acoustoelectric interaction in a multilayered structure resulting from the analysis of $Si/SiO_{2}$ structure. The dominant mechanism for such a behavior is attributed to the periodicity of the energy spectrum of electron along the SL axis." @default.
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- W2079231879 date "2012-08-15" @default.
- W2079231879 modified "2023-10-16" @default.
- W2079231879 title "The Nonlinear Acoustoelectric Effect in a Superlattice" @default.
- W2079231879 doi "https://doi.org/10.15625/0868-3166/20/3/2278" @default.
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