Interaction effects in Aharonov-Bohm-Kondo Rings
Strongly Correlated Electrons
2014-08-21 v2
Abstract
We study the conductance through an Aharonov-Bohm ring, containing a quantum dot in the Kondo regime in one arm, at finite temperature and arbitrary electronic density. We develop a general method for this calculation based on changing basis to the screening and non-screening channels. We show that an unusual term appears in the conductance, involving the connected 4-point Green's function of the conduction electrons. However, this term and terms quadratic in the -matrix can be eliminated at sufficiently low temperatures, leading to an expression for the conductance linear in the Kondo T-matrix. Explicit results are given for temperatures high compared to the Kondo temperature.
Cite
@article{arxiv.1309.0554,
title = {Interaction effects in Aharonov-Bohm-Kondo Rings},
author = {Yashar Komijani and Ryosuke Yoshii and Ian Affleck},
journal= {arXiv preprint arXiv:1309.0554},
year = {2014}
}