Phase diagram and symmetry breaking of SU(4) spin-orbital chain in a generalized external field

Abstract

The ground state phases of a one-dimensional SU(4) spin-orbital Hamiltonian in a generalized external field are studied on the basis of Bethe-ansatz solution. Introducing three Landé $g$ factors for spin, orbital and their products in the SU(4) Zeeman term, we discuss systematically the various symmetry breaking. The magnetization versus external field are obtained by solving Bethe-ansatz equations numerically. The phase diagrams corresponding to distinct residual symmetries are given by means of both numerical and analytical methods.

Revtex4, 16 pages, 7 figures

References in corpus (5)

• 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
• Magnetic properties of an SU(4) spin-orbital chain
• Effects of a magnetic field on the one-dimensional spin-orbital model

Cited by in corpus (3)

• Integrable models and quantum spin ladders: comparison between theory and experiment for the strong coupling ladder compounds
• Response functions in multicomponent Luttinger liquids
• Exact solution and magnetic properties of an anisotropic spin ladder