Conductance quantization in a periodically modulated quantum channel: Backscattering and mode mixing
Conductance quantization in a periodically modulated quantum channel: Backscattering and mode mixing
It is known that the conductance of a quantum point contact is quantized in units of ${2e}^{2}/h$ and this quantization is destroyed by a nonadiabatic scatterer in the point contact, due to backscattering. Recently, it was shown [Phys. Rev. Lett. 71, 137 (1993)] that, taking many nonadiabatic scatterers periodically in …