Topological Scenario for Stripe Formation in Manganese Oxides
Strongly Correlated Electrons
2009-10-31 v1
Abstract
The spin-charge-orbital complex structures of manganites are studied using topological concepts. The key quantity is the "winding number" w associated with the Berry-phase connection of an e_g electron parallel-transported through Jahn-Teller centers, along zigzag one-dimensional paths in an antiferromagnetic environment of t_{2g} spins. From these concepts, it is shown that the "bi-stripe" and "Wigner-crystal" states observed experimentally have different w's. Predictions for the spin structure of the charge-ordered states for heavily doped manganites are discussed.
Cite
@article{arxiv.cond-mat/9911248,
title = {Topological Scenario for Stripe Formation in Manganese Oxides},
author = {Takashi Hotta and Yasutami Takada and Hiroyasu Koizumi and Elbio Dagotto},
journal= {arXiv preprint arXiv:cond-mat/9911248},
year = {2009}
}
Comments
5 pages, Revtex, with 3 figures embedded in the text. Submitted to Phys. Rev. Lett