Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model

Details Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model

1998-05-18

arxiv.org/abs/cond-mat/9805203v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, ReVTeX, 4 figures

Scientific paper

10.1088/0953-8984/10/32/001

The Kugel-Khomskii model, the simplest model for orbital degenerate magnetic insulators, exhibits a zero temperature degeneracy in the classical limit which could cause genuine quantum disorder. Khaliullin and Oudovenko [Phys. Rev. B 56, R14 243 (1997)] suggested recently that instead a particular classical state could be stabilized by quantum fluctuations. Here we compare their approach with standard random phase approximation and show that it strongly underestimates the strength of the quantum fluctuations, shedding doubts on the survival of any classical state.

Affiliated with

Also associated with

No associations

Rating

Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model 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 Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum disorder versus order-out-of-disorder in the Kugel-Khomskii model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-628358