Gradient and Amplitude Scattering in Surface-Corrugated Waveguides
arXiv:cond-mat/0507627 · doi:10.1103/PhysRevB.72.041403
Abstract
We investigate the interplay between amplitude and square-gradient scattering from the rough surfaces in multi-mode waveguides (conducting quantum wires). The main result is that for any (even small in height) roughness the square-gradient terms in the expression for the wave scattering length (electron mean free path) are dominant, provided the correlation length of the surface disorder is small enough. This important effect is missed in existing studies of the surface scattering.
4 pages, one figure
References in corpus (4)
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Cited by in corpus (11)
- Anomalous Localization in Low-Dimensional Systems with Correlated Disorder
- Statistical Scattering of Waves in Disordered Waveguides: from Microscopic Potentials to Limiting Macroscopic Statistics
- Multimode Coupling by Boundary Wave Scattering
- Manifestation of the Roughness-Square-Gradient Scattering in Surface-Corrugated Waveguides
- Surface scattering and band gaps in rough waveguides and nanowires
- Quantum Arnol'd diffusion in a rippled waveguide
- Ballistic, diffusive, and localized transport in surface-disordered systems: Two-mode waveguide
- Reflection resonances in surface-disordered waveguides: strong higher-order effects of the disorder
- Disorder to chaos transition in the conductance distribution of corrugated waveguides
- Resonant Anderson localization in segmented wires
- Discrimination between two mechanisms of surface-scattering in a single-mode waveguide