Theory of Ferromagnetism in Ca1-xLaxB6
Strongly Correlated Electrons
2009-11-07 v3
Abstract
Novel ferromagnetism in CaLaB is studied in terms of the Ginzburg-Landau theory for excitonic order parameters, taking into account symmetry of the wavefunctions. We found that the minima of the free energy break both inversion and time-reversal symmetries, while the product of these two remains preserved. This explains various novelties of the ferromagnetism and predicts a number of magnetic properties, including the magnetoelectric effect, which can be tested experimentally.
Keywords
Cite
@article{arxiv.cond-mat/0107215,
title = {Theory of Ferromagnetism in Ca1-xLaxB6},
author = {Shuichi Murakami and Ryuichi Shindou and Naoto Nagaosa and Andrei S. Mishchenko},
journal= {arXiv preprint arXiv:cond-mat/0107215},
year = {2009}
}
Comments
5 pages, accepted for publication in Phys.Rev.Lett