Manganites at Low Temperatures and Light Doping:Band Approach and Percolation
| dc.creator | Gor`kov, Lev P. | |
| dc.creator | Kresin, Vladimir Z. | |
| dc.date | 1998-04-30 | |
| dc.date.accessioned | 2026-07-07T03:10:25Z | |
| dc.date.available | 2026-07-07T03:10:25Z | |
| dc.description | A tight-band model is employed for the $e_{2g}$-orbitals in manganites. It is shown that a large intraatomic Hund's coupling, $J_H$ and the resulting double-exchange mechanism lead to antiferromagnetic ordering along one of the cubic axis stabilized by the cooperative JT effect which further decreases the band energy of electrons. As a result, LaMnO$_3$ is a band insulator built of 2D ferromagnetic layers. The critical concentration $x_c\simeq 0.16$, for onset of ferromagnetic and metallic behavior at low temperatures in La$_{1-x}$Sr$_x$MnO$_3$ and the phase transition are treated in the percolation approach. | |
| dc.description | 3.5 pages,no figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9804328 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9804328 | |
| dc.identifier | Pis`ma v ZhETF 67(1998)934 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28233 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Manganites at Low Temperatures and Light Doping:Band Approach and Percolation | |
| dc.type | text |