Indirect RKKY Interaction in the Nearly Nested Fermi Liquid
Abstract
The indirect RKKY interaction in a layered metal with nearly nested (almost squared) Fermi surface is evaluated analytically. The final expressions are obtained in closed form as a combination of Bessel functions. We show that the expected ``2k_F'' oscillations occur as the far asymptote of our expressions, where a value of the effective Fermi momentum k_F depends on the direction in r-space. We demonstrate the existence of the intermediate asymptote of the interaction which is of the sign-reversal antiferromagnetic type. This part of RKKY interaction is the only term surviving in the limit of exact nesting. A good accordance of our analytical formulas with numerical findings is found until the interatomic distances.
Keywords
Cite
@article{arxiv.cond-mat/9910227,
title = {Indirect RKKY Interaction in the Nearly Nested Fermi Liquid},
author = {D. N. Aristov and S. V. Maleyev},
journal= {arXiv preprint arXiv:cond-mat/9910227},
year = {2009}
}
Comments
2 pages, no figures, LT22 proceedings, phbauth style file included