论文标题
暴露于瑞利表面声波的二维狄拉克材料中的副作用效应
Acoustoelectric effect in two-dimensional Dirac materials exposed to Rayleigh surface acoustic waves
论文作者
论文摘要
我们研究二维材料中的大声力效应，例如位于非Piezoelectric底物上的过渡金属二甲藻元素单层，并暴露于瑞利表面声波。我们研究了由于k空间中山谷的三角形翘曲而出现的电流密度的大厅成分的行为。我们计算当前密度的频谱，并研究其对样品中电子有效寿命和密度的依赖性。我们区分电流和显示的漂移和扩散成分，该组件的主要成分主要是主导。此外，我们比较了雷利和布鲁斯坦 - 古利亚夫声波的效果，如果样品位于压电底物上，它们会出现。
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.
