Mobility of a spatially modulated electron liquid on the helium surface
Mobility of a spatially modulated electron liquid on the helium surface
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DOI：
10.1103/physrevb.101.245435
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发表时间：
2020-06-24
影响因子：
3.7
通讯作者：
Dykman, M., I
中科院分区：
文献类型：
--
作者：
Moskovtsev, K.;Dykman, M., I
我们提出了一个大规模的数值模拟的二维电子液体在氦表面的迁移率在一个一维周期性的潜在存在的结果。即使在电势比电子-电子相互作用弱得多的情况下，它也可以强烈地改变迁移率。这种效应取决于势周期和平均电子间距离之间的相互关系。当周期接近于将液体冷却到较低温度时形成的维格纳晶体的周期时，这一点最为明显。结果表明，特别是，在电子液体中的相关长度可以通过测量在弱周期势的迁移率。模拟的基础上的电子散射的激发在氦的微观模型。
We present the results of large-scale numerical simulations of the mobility of a two-dimensional electron liquid on the helium surface in the presence of a one-dimensional periodic potential. Even where the potential is much weaker than the electron-electron interaction, it can strongly change the mobility. The effect depends on the interrelation between the potential period and the mean interelectron distance. It is most pronounced where the period is close to the period of the Wigner crystal that would form if the liquid were cooled to a lower temperature. The results suggest, in particular, that the correlation length in the electron liquid can be found by measuring the mobility in a weak periodic potential. The simulations are based on the microscopic model of the electron scattering by the excitations in helium.