Evanescent channels and scattering in cylindrical nanowire heterostructures
Evanescent channels and scattering in cylindrical nanowire heterostructures
We investigate the scattering phenomena produced by a general finite-range nonseparable potential in a multichannel two-probe cylindrical nanowire heterostructure. The multichannel current scattering matrix is efficiently computed using the $R$-matrix formalism extended for cylindrical coordinates. Considering the contribution of the evanescent channels to the scattering matrix, we are able to …