Negative differential resistance due to the resonance coupling of a quantum-dot dimer
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
Electron tunneling through a coupled quantum-dot dimer under a dc-bias is investigated. We find that a peak in the - curve appears at low temperature when two discrete electronic states in the two quantum dots are aligned with each other -- resonance coupling. This leads to a negative differential resistance. The peak height and width depend on the dot-dot coupling. At high temperature, the peak disappears due to thermal smearing effects.
Keywords
Cite
@article{arxiv.cond-mat/0305018,
title = {Negative differential resistance due to the resonance coupling of a quantum-dot dimer},
author = {S. D. Wang and Z. Z. Sun and N. Cue and X. R. Wang},
journal= {arXiv preprint arXiv:cond-mat/0305018},
year = {2007}
}
Comments
9 pages, 8 figures. It has been submitted to Journal of Physics: Condensed Matter