Competition between Kondo screening and indirect magnetic exchange in a quantum box
Strongly Correlated Electrons
2012-12-19 v3 Mesoscale and Nanoscale Physics
Abstract
Nanoscale systems of metal atoms antiferromagnetically exchange coupled to several magnetic impurities are shown to exhibit an unconventional re-entrant competition between Kondo screening and indirect magnetic exchange interaction. Depending on the atomic positions of the magnetic moments, the total ground-state spin deviates from predictions of standard Ruderman-Kittel-Kasuya-Yosida perturbation theory. The effect shows up on an energy scale larger than the level width induced by the coupling to the environment and is experimentally verifiable by studying magnetic field dependencies.
Keywords
Cite
@article{arxiv.1208.2209,
title = {Competition between Kondo screening and indirect magnetic exchange in a quantum box},
author = {Andrej Schwabe and Daniel Gütersloh and Michael Potthoff},
journal= {arXiv preprint arXiv:1208.2209},
year = {2012}
}
Comments
5 pages, 2 figures, v3 with minor changes