Interference of Fano-Rashba conductance dips
Mesoscale and Nanoscale Physics
2015-03-18 v1
Abstract
We study the interference of two tunable Rashba regions in a quantum wire with one propagating mode. The transmission dips (Fano-Rashba dips) of the two regions either cross or anti cross depending on the distance between the two regions. For large separations we find Fabry-P\'erot oscillations due to the interference of forwards and backwards propagating modes. At small separations overlapping evanescent modes play a prominent role, leading to an enhanced transmission and destroying the conductance dip. Analytical expressions in scattering-matrix theory are given and the relevance of the interference effect in a device is discussed.
Keywords
Cite
@article{arxiv.1102.0457,
title = {Interference of Fano-Rashba conductance dips},
author = {A. Renart and M. M. Gelabert and L. Serra},
journal= {arXiv preprint arXiv:1102.0457},
year = {2015}
}
Comments
10 pages, 4 embedded figures