O. Dietz, H. -J. Stöckmann, U. Kuhl, F. M. Izrailev, N. M. Makarov, J. Doppler, F. Libisch, S. Rotter
The boundaries of nanowires and waveguides have drastic influence on their transport properties. Designing the boundary profile is thus a promising approach for transport and band-gap engineering with many applications. By performing an experimental study of the transmission through waveguides we demonstrate that a recently proposed surface scattering theory can be employed to predict the measured transport properties from the boundary profiles and vice versa. A new key ingredient of this theory is a scattering mechanism which depends on the square gradient of the surface profiles. We demonstrate the non-trivial effects of this scattering mechanism by detailed mode-resolved microwave measurements and numerical simulations.
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http://arxiv.org/abs/1205.3646
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