Discrimination between two mechanisms of surface-scattering in a   single-mode waveguide
  Transport properties of a single-mode waveguide with rough boundary are studied by discrimination between two mechanisms of surface scattering, the amplitude and square-gradient ones. Although these mechanisms are generically mixed, we show that for some profiles they can separately operate within non-overlapping intervals of wave numbers of scattering waves. This effect may be important in realistic situations due to inevitable long-range correlations in scattering profiles. 
Manuel Rend\'on, Felix M. Izrailev, Nykolay M. Makarov (Universidad   Aut\'onoma de Puebla, Puebla, M\'exico)
cond-mat.stat-mech cond-mat.mes-hall