Spin-Orbital Entanglement and Violation of the Goodenough-Kanamori Rules
- 14 April 2006
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 96 (14), 147205
- https://doi.org/10.1103/physrevlett.96.147205
Abstract
We point out that large composite spin-orbital fluctuations in Mott insulators with orbital degeneracy are a manifestation of quantum entanglement of spin and orbital variables. This results in a dynamical nature of the spin superexchange interactions, which fluctuate over positive and negative values, and leads to an apparent violation of the Goodenough-Kanamori rules.
Keywords
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