Landau Damping in a 2D Electron Gas with Imposed Quantum Grid

Details Landau Damping in a 2D Electron Gas with Imposed Quantum Grid Landau Damping in a 2D Electron Gas with Imposed Quantum Grid

2003-09-24

arxiv.org/abs/cond-mat/0309546v2

Nanotechnology, 15 (2004), 441

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 12 eps-figures

Scientific paper

10.1088/0957-4484/15/5/007

Dielectric properties of semiconductor substrate with imposed two dimensional (2D) periodic grid of quantum wires or nanotubes (quantum crossbars, QCB) are studied. It is shown that a capacitive contact between QCB and semiconductor substrate does not destroy the Luttinger liquid character of the long wave QCB excitations. However, the dielectric losses of a substrate surface are drastically modified due to diffraction processes on the QCB superlattice. QCB-substrate interaction results in additional Landau damping regions of the substrate plasmons. Their existence, form and the density of losses are strongly sensitive to the QCB lattice constant.

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