Quantum transport in ballistic conductors: evolution from conductance quantization to resonant tunneling
Disordered Systems and Neural Networks
2009-10-31 v2 Mesoscale and Nanoscale Physics
Abstract
We study the transport properties of a three dimensional atomic-scale contact in the ballistic regime. The results for the conductance and related transmission eigenvalues show how the properties of the ideal semi-infinite leads (i.e. measuring device) as well as the coupling between the leads and the conductor influence the transport in a two-probe geometry. We observe the evolution from conductance quantization to resonant tunneling conductance peaks upon changing the hopping parameter in the disorder-free tight-binding Hamiltonian which describes the leads and the coupling to the sample.
Keywords
Cite
@article{arxiv.cond-mat/0002415,
title = {Quantum transport in ballistic conductors: evolution from conductance quantization to resonant tunneling},
author = {Branislav K. Nikolic and Philip B. Allen},
journal= {arXiv preprint arXiv:cond-mat/0002415},
year = {2009}
}
Comments
4 pages, 4 embedded EPS figures, revised version