Double exchange model in cubic vanadates
| dc.creator | Wohlfeld, Krzysztof | |
| dc.creator | Oles, Andrzej M. | |
| dc.date | 2006-04-15 | |
| dc.date.accessioned | 2026-07-07T07:05:32Z | |
| dc.date.available | 2026-07-07T07:05:32Z | |
| dc.description | We investigate the role of the double exchange mechanism for stability of the metallic C-type antiferromagnetic (C-AF) phase, which was observed experimentally in hole doped La$_{1-x}$Sr$_x$VO$_3$. The double exchange model treats localized electrons in xy orbitals as classical S=1/2 spins, which interact by Hund's exchange $J_H$ with yz/zx electrons in partly filled $t_{2g}$ orbitals. Including strong on-site Coulomb repulsion $U$ between $t_{2g}$ electrons, and using slave boson method we demonstrate that C-AF and metallic phase can be stabilized due to the specific features of the hopping in degenerate and partly filled $t_{2g}$ orbitals. | |
| dc.description | 6 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0604384 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0604384 | |
| dc.identifier | Phys. Stat. Sol. (b) 243, 142 (2006) | |
| dc.identifier | doi:10.1002/pssb.200562500 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/109702 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Double exchange model in cubic vanadates | |
| dc.type | text |