Theory of Ferromagnetism in Ca1-xLaxB6

Preprint

15 February 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0107215

Abstract

Novel ferromagnetism in Ca$_{1-x}$La$_{x}$B$_6$ 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

NOVEL FERROMAGNETISM
MAGNETIC PROPERTIES
MAGNETOELECTRIC
XLAXB6 NOVEL
CA1 XLAXB6
EXCITONIC
THEORY

All Related Versions

Version 1, 2001-07-11, ArXiv
Version 2, 2001-10-30, ArXiv
Version 3, 2002-02-15, ArXiv
Published version: Physical Review Letters, 88 (12), 126404.

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