Interactions of fast charged particles with supported two-dimensional electron gas: One-fluid model
作者： Ivan Radović , Duško Borka , None
DOI: 10.1016/J.PHYSLETA.2010.01.056
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摘要: We investigate the interactions of fast charged particles with a two-dimensional (2D) electron gas (2DEG) supported by an insulating substrate, describing its collective or plasmon excitations one-fluid hydrodynamic model parameters characteristic graphene. By linearizing equations, we derive general expressions for induced potential, stopping force and image on particle moving parallel to 2DEG, as well number density per unit area electrons in 2DEG. Numerical results are obtained showing effects variation size gap between 2DEG SiO2 substrate these quantities. It is also found that, when speed exceeds threshold value excitations, oscillatory wake effect develops trailing particle.
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