Orbital liquid in three dimensional Mott insulator: $LaTiO_3$

Details Orbital liquid in three dimensional Mott insulator: $LaTiO_3$ Orbital liquid in three dimensional Mott insulator: $LaTiO_3$

2000-08-02

arxiv.org/abs/cond-mat/0008032v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.85.3950

We present a theory of spin and orbital states in Mott insulator $LaTiO_3$. The spin-orbital superexchange interaction between $d^1(t_{2g})$ ions in cubic crystal suffers from a pathological degeneracy of orbital states at classical level. Quantum effects remove this degeneracy and result in the formation of the coherent ground state, in which the orbital moment of $t_{2g}$ level is fully quenched. We find a finite gap for orbital excitations. Such a disordered state of local degrees of freedom on unfrustrated, simple cubic lattice is highly unusual. Orbital liquid state naturally explains observed anomalies of $LaTiO_3$.

Affiliated with

Also associated with

No associations

Rating

Orbital liquid in three dimensional Mott insulator: $LaTiO_3$ 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 liquid in three dimensional Mott insulator: $LaTiO_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital liquid in three dimensional Mott insulator: $LaTiO_3$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-402764