Phase Diagram of Spin-Orbital Model
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We show that the mean-field phase diagram of the realistic spin-orbital model derived for a perovskite lattice in three dimensions consists of four different classical magnetic phases which become degenerate at orbital degeneracy. The quantum fluctuations are drastically enhanced and suppress the classical long-range order, providing a new mechanism to stabilize a quantum spin liquid near the multicritical point.
- Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
- Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands
- Institute Lorentz, Leiden University, P.O.B. 9506, 2300 RA Leiden, The Netherlands
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