Re-examining the Verwey transition in Fe3O4
| dc.creator | Craco, L. | |
| dc.creator | Laad, M. S. | |
| dc.creator | Müller-Hartmann, E. | |
| dc.date | 2005-11-16 | |
| dc.date.accessioned | 2026-07-07T06:46:10Z | |
| dc.date.available | 2026-07-07T06:46:10Z | |
| dc.description | Motivated by recent structural data questioning the adequacy of the charge order (CO)/disorder picture for the Verwey transition (at T=T_V) in magnetite, we re-investigate this issue within a new theoretical picture. Using the state-of-the-art LDA+DMFT method, we show that the non-trivial interplay between the B-site octahedral distortions and strong, multi-orbital electronic correlations in the half-metallic state is a necessary ingredient for a proper quantitative understanding of the physical responses across T_V. While weak CO is found to have very small effects on the low-T spectral function, the low-T charge gap and the resistivity jump across T_V are quantitatively reproduced only upon inclusion of CO in LSDA+DMFT scheme. Our results strongly suggest that the Verwey transition is dominantly driven by multi-orbital electronic correlations with associated JT distortions on the B-sublattice, and constitutes a non-trivial advance in attempts to understand the physics of Fe3O4. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0511390 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0511390 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/103248 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Materials Science | |
| dc.title | Re-examining the Verwey transition in Fe3O4 | |
| dc.type | text |