Magnetic properties of an SU(4) spin-orbital chain

Abstract

In this paper, we study the magnetic properties of the one-dimensional SU(4) spin-orbital model by solving its Bethe ansatz solution numerically. It is found that the magnetic properties of the system for the case of $g_t=1.0$ differs from that for the case of $g_t=0.0$. The magnetization curve and susceptibility are obtained for a system of 200 sites. For $0<g_t<g_s$, the phase diagram depending on the magnetic field and the ratio of Landé factors, $g_t/g_s$, is obtained. Four phases with distinct magnetic properties are found.

arXiv comment4 pages, 2 figures

References in corpus (8)

• Continuous Quantum Phase Transitions
• SU(4) Theory for Spin Systems with Orbital Degeneracy
• Alternating Spin and Orbital Dimerization in Strong-coupling Two-band Models
• Thermodynamics of the one-dimensional SU(4) symmetric spin-orbital model
• Phase diagram of a 1 dimensional spin-orbital model
• Quantum melting of magnetic long-range order near orbital degeneracy. Classical phases and Gaussian fluctuations
• Crossover Phenomena in the One-Dimensional SU(4) Spin-Orbit Model under Magnetic Fields
• Effects of a magnetic field on the one-dimensional spin-orbital model

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• DMRG studies of critical SU(N) spin chains
• Nonlinear integral equations for the thermodynamics of the sl(4)-symmetric Uimin-Sutherland model
• Complementary colors of colorons: the elementary excitations of the SU(3) Haldane--Shastry model
• Phase diagram and symmetry breaking of SU(4) spin-orbital chain in a generalized external field
• Magnetization plateau and quantum phase transitions in a spin-orbital model