The Aharonov-Bohm-Casher ring-dot as a flux-tunable resonant tunneling diode
Mesoscale and Nanoscale Physics
2008-05-22 v1
Abstract
A mesoscopic ring subject to the Rashba spin-orbit interaction and sequentially coupled to an interacting quantum dot, in the presence of Aharonov-Bohm flux, is proposed as a flux tunable tunneling diode. The analysis of the conductance by means of the nonequilibrium Green's function technique, shows an intrinsic bistability at varying the Aharonov-Bohm flux when 2U > \pi \Gamma, U being the charging energy on the dot and \Gamma the effective resonance width. The bistability properties are discussed in connection with spin-switch effects and logical storage device applications.
Keywords
Cite
@article{arxiv.0805.2715,
title = {The Aharonov-Bohm-Casher ring-dot as a flux-tunable resonant tunneling diode},
author = {R. Citro and F. Romeo},
journal= {arXiv preprint arXiv:0805.2715},
year = {2008}
}
Comments
to appear on PRB