Nanoscale phase separation in manganites
Abstract
We study the possibility of nanoscale phase separation in manganites in the framework of the double exchange model. The homogeneous canted state of this model is proved to be unstable toward the formation of small ferromagnetic droplets inside an antiferromagnetic insulating matrix. For the ferromagnetic polaronic state we analyze the quantum effects related to the tails of electronic wave function and a possibility of electron hopping in the antiferromagnetic background. We find that these effects lead to the formation of the threshold for the polaronic state.
Cite
@article{arxiv.cond-mat/0301626,
title = {Nanoscale phase separation in manganites},
author = {M. Yu. Kagan and A. V. Klaptsov and I. V. Brodsky and K. I. Kugel and A. O. Sboychakov and A. L. Rakhmanov},
journal= {arXiv preprint arXiv:cond-mat/0301626},
year = {2009}
}
Comments
10 pages, 2 figures, invited talk on the workshop on Strongly Correlated Electrons in New Materials (SCENM02), Loughborough (UK). submitted to Journal of Physics A: Mathematical and General