Manifestation of the Roughness-Square-Gradient Scattering in Surface-Corrugated Waveguides
Disordered Systems and Neural Networks
2009-11-11 v1 Other Condensed Matter
Abstract
We study a new mechanism of wave/electron scattering in multi-mode surface-corrugated waveguides/wires. This mechanism is due to specific square-gradient terms in an effective Hamiltonian describing the surface scattering, that were neglected in all previous studies. With a careful analysis of the role of roughness slopes in a surface profile, we show that these terms strongly contribute to the expression for the inverse attenuation length (mean free path), provided the correlation length of corrugations is relatively small. The analytical results are illustrated by numerical data.
Keywords
Cite
@article{arxiv.cond-mat/0510530,
title = {Manifestation of the Roughness-Square-Gradient Scattering in Surface-Corrugated Waveguides},
author = {F. M. Izrailev and N. M. Makarov and M. Rendon},
journal= {arXiv preprint arXiv:cond-mat/0510530},
year = {2009}
}
Comments
13 pages, 3 figures