内蒙古民族大学学报（自然科学版）2024，Vol.39Issue(2)：91-96,6.DOI:10.14045/j.cnki.15-1220.2024.02.014
黏滞效应对带电粒子在双层二维电子气上方运动时受力情况的影响
The Viscous Effect on the Forces Acting on the Charged Particles Moving above Double-Layer Two-Dimensional Electron Gases
摘要
Abstract
The viscous effect on the electrostatic excitation state of charged particles interacting with double-layer tow-dimensional electron gases was studied using a linearized quantum hydrodynamic model(QHD).By com-bining with the Poisson equation,the integral expressions for the induced electron gas density,the induced potential,the stopping force and lateral force are derived.The simulation results indicate that the oscillation region and ampli-tude of electron density in both planes decrease with the increasing of viscosity coefficient for a given incident parti-cle velocity.In addition,for the variation of the stopping force with the velocity,the viscous effect increases the stop-ping force when the velocity is less than the Bohr velocity,but decreases when the velocity is higher.For lateral force,however,in the lower velocity region,the larger the viscosity coefficient,the smaller the lateral force.When the velocity increases to one and half the Bohr velocity,the effect of viscosity on lateral force decreases and then disappears gradually.关键词
QHD模型/双层二维电子气/黏滞效应/静电激发Key words
quantum hydrodynamic model/double layered graphene/viscous effect/electrostatic excitation分类
数理科学引用本文复制引用
史欣如,李春芝..黏滞效应对带电粒子在双层二维电子气上方运动时受力情况的影响[J].内蒙古民族大学学报（自然科学版）,2024,39(2):91-96,6.基金项目
内蒙古自治区高校科研项目(NJZY23098) （NJZY23098）
内蒙古自治区自然科学基金项目(2023LHMS06026) （2023LHMS06026）
