Orbital-quenching-induced magnetism in Ba_2NaOsO_6
| dc.creator | Lee, K. -W. | |
| dc.creator | Pickett, W. E. | |
| dc.date | 2007-09-16 | |
| dc.date.accessioned | 2026-07-07T08:35:37Z | |
| dc.date.available | 2026-07-07T08:35:37Z | |
| dc.description | The double perovskite \bnoo with heptavalent Os ($d^1$) is observed to remain in the ideal cubic structure ({\it i.e.} without orbital ordering) despite single occupation of the $t_{2g}$ orbitals, even in the ferromagnetically ordered phase below 6.8 K. Analysis based on the {\it ab initio} dispersion expressed in terms of an Os $t_{2g}$-based Wannier function picture, spin-orbit coupling, Hund's coupling, and strong Coulomb repulsion shows that the magnetic OsO$_6$ cluster is near a moment-less condition due to spin and orbital compensation. Quenching (hybridization) then drives the emergence of the small moment. This compensation, unprecedented in transition metals, arises in a unified picture that accounts for the observed Mott insulating behavior. | |
| dc.description | in press at Europhysics Letters | |
| dc.identifier | https://arxiv.org/abs/0709.2520 | |
| dc.identifier | http://arxiv.org/abs/0709.2520 | |
| dc.identifier | EPL 80, 37008 (2007) | |
| dc.identifier | doi:10.1209/0295-5075/80/37008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/139805 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Materials Science | |
| dc.title | Orbital-quenching-induced magnetism in Ba_2NaOsO_6 | |
| dc.type | text |