Analysis of f-p model for octupole ordering in NpO2
Strongly Correlated Electrons
2009-08-11 v2
Abstract
In order to examine the origin of octupole ordering in NpO2, we propose a microscopic model constituted of neptunium 5f and oxygen 2p orbitals. To study multipole ordering, we derive effective multipole interactions from the f-p model by using the fourth-order perturbation theory in terms of p-f hopping integrals. Analyzing the effective model numerically, we find a tendency toward \Gamma_{5u} antiferro-octupole ordering.
Cite
@article{arxiv.cond-mat/0505548,
title = {Analysis of f-p model for octupole ordering in NpO2},
author = {Katsunori Kubo and Takashi Hotta},
journal= {arXiv preprint arXiv:cond-mat/0505548},
year = {2009}
}
Comments
4 pages, 3 figures