Gradient and amplitude scattering in surface-corrugated waveguides
Gradient and amplitude scattering in surface-corrugated waveguides
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 …