RKKY interactions in the regime of strong localization
Strongly Correlated Electrons
2011-11-09 v3 Disordered Systems and Neural Networks
Abstract
We study the influence of strong nonmagnetic disorder on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between diluted magnetic moments in metals. We find that the probability distribution for the RKKY interactions assumes strongly non-Gaussian form featuring long tails. Since such distributions cannot be characterized by its moments, we define a \textit{typical} value of the interaction amplitude, which we find to be exponentially suppressed in presence of Anderson localization. Our results present a plausible and physically transparent picture describing how Anderson localization effectively eliminates the long range nature of the RKKY interactions.
Keywords
Cite
@article{arxiv.cond-mat/0609425,
title = {RKKY interactions in the regime of strong localization},
author = {J. A. Sobota and D. Tanaskovic and V. Dobrosavljevic},
journal= {arXiv preprint arXiv:cond-mat/0609425},
year = {2011}
}
Comments
6 pages, published version