Thermodynamics of the one-dimensional SU(4) symmetric spin-orbital model

Abstract

The ground state properties and the thermodynamics of the one-dimensional SU(4) symmetric spin system with orbital degeneracy are investigated using the quantum Monte Carlo loop algorithm. The spin-spin correlation functions exhibit a 4-site periodicity, and their low temperature behavior is controlled by two correlation lengths that diverge like the inverse temperature, while the entropy is linear in temperature and its slope is consistent with three gapless modes of velocity $\pi /2$. The physical implications of these results are discussed.

4 pages, 4 figures, RevTeX

References in corpus (5)

• Cluster Algorithm for Vertex Models
• Quantum Melting of Magnetic Order due to Orbital Fluctuations
• SU(4) Theory for Spin Systems with Orbital Degeneracy
• SU(4) spin-orbit critical state in one dimension
• Dramatic Switching of Magnetic Exchange in a Classic Transition Metal Oxide: Evidence for Orbital Ordering

Cited by in corpus (90)

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