Electrical excitation of shock and soliton-like waves in two-dimensional electron channels - Condensed Matter > Mesoscale and Nanoscale PhysicsReport as inadecuate




Electrical excitation of shock and soliton-like waves in two-dimensional electron channels - Condensed Matter > Mesoscale and Nanoscale Physics - Download this document for free, or read online. Document in PDF available to download.

Abstract: We study electrical excitation of nonlinear plasma waves in heterostructureswith two-dimensional electron channels and with split gates, and thepropagation of these waves using hydrodynamic equations for electron transportcoupled with two-dimensional Poisson equation for self-consistent electricpotential. The term related to electron collisions with impurities and phononsas well as the term associated with viscosity are included into thehydrodynamic equations. We demonstrate the formation of shock and soliton-likewaves as a result of the evolution of strongly nonuniform initial electrondensity distribution. It is shown that the shock wave front and the shape ofsoliton-like pulses pronouncedly depend on the coefficient of viscosity, thethickness of the gate layer and the nonuniformity of the donor distributionalong the channel. The electron collisions result in damping of the shock andsoliton-like waves, while they do not markedly affect the thickness of theshock wave front.



Author: E.Vostrikova, A.Ivanov, I.Semenikhin, V.Ryzhii

Source: https://arxiv.org/







Related documents