Orbital-quenching-induced magnetism in Ba_2NaOsO_6

Details Orbital-quenching-induced magnetism in Ba_2NaOsO_6 Orbital-quenching-induced magnetism in Ba_2NaOsO_6

2007-09-16

arxiv.org/abs/0709.2520v1

EPL 80, 37008 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

in press at Europhysics Letters

Scientific paper

10.1209/0295-5075/80/37008

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.

Affiliated with

Also associated with

No associations

Rating

Orbital-quenching-induced magnetism in Ba_2NaOsO_6 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Orbital-quenching-induced magnetism in Ba_2NaOsO_6, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital-quenching-induced magnetism in Ba_2NaOsO_6 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-378225