Ferromagnetism and superstructure in Ca_{1-x}La_xB_6

Preprint

26 June 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9906401

Abstract

We critically investigate the model of a doped excitonic insulator, which recently has been invoked to explain some experimental properties of the ferromagnetic state in Ca_{1-x}La_xB_6. We demonstrate that the ground state of this model is intrinsically unstable towards the appearance of a superstructure. In addition, the model would lead to a phase separation regime and the domain structure which may be prevented by the Coulomb forces only. Recent experiments indicate that a superstructure may indeed show up in this material.

Keywords

COULOMB
CRITICALLY INVESTIGATE
DOMAIN STRUCTURE
DOPED
EXCITONIC
FERROMAGNETISM
MODEL
PREVENTED
SUPERSTRUCTURE
LA_XB_6

All Related Versions

Version 1, 1999-06-26, ArXiv
Published version: Physical Review Letters, 84 (10), 2207.

This publication has 0 references indexed in Scilit: