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Reflection resonances in surface-disordered waveguides: strong higher-order effects of the disorder

Autor: Doppler, J., Méndez-Bermúdez, J. A., Feist, J., Dietz, O., Krimer, D. O., Makarov, N. M., Izrailev, F. M., Rotter, S.

Publikováno v: New J. Phys. 16, 053026 (2014)

We study coherent wave scattering through waveguides with a step-like surface disorder and find distinct enhancements in the reflection coefficients at well-defined resonance values. Based on detailed numerical and analytical calculations, we can una

Externí odkaz: http://arxiv.org/abs/1312.7458

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Surface scattering and band gaps in rough waveguides and nanowires

Autor: Dietz, O., Stöckmann, H. -J., Kuhl, U., Izrailev, F. M., Makarov, N. M., Doppler, J., Libisch, F., Rotter, S.

Publikováno v: PRB 86, 201106(R) (2012)

The boundaries of waveguides and nanowires have drastic influence on their coherent scattering properties. Designing the boundary profile is thus a promising approach for transmission and band-gap engineering with many applications. By performing an

Externí odkaz: http://arxiv.org/abs/1205.3646

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Transmission in waveguides with compositional and structural disorder: experimental effects of disorder cross-correlations

Autor: Dietz, O., Kuhl, U., Hernández-Herrejón, J. C., Tessieri, L.

Publikováno v: New Journal of Physics 14 (2012) 013048

We analyse the single-mode transmission of microwaves in a guide with internal random structure. The waveguide contains scatterers characterised by random heights and positions, corresponding to compositional and structural disorder. We measure the e

Externí odkaz: http://arxiv.org/abs/1109.1120

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Microwave realization of quasi one-dimensional systems with correlated disorder

Autor: Dietz, O., Kuhl, U., Stoeckmann, H. -J., Makarov, N. M., Izrailev, F. M.

Publikováno v: Physical Review B 83, 134203 (2011)

A microwave setup for mode-resolved transport measurement in quasi-one-dimensional (quasi-1D) structures is presented. We will demonstrate a technique for direct measurement of the Green's function of the system. With its help we will investigate qua

Externí odkaz: http://arxiv.org/abs/1012.0604

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