101. Critical behavior of the SU(3) ferromagnetic Heisenberg chain
- Author
-
Pedro Schlottmann, Kong-Ju-Bock Lee, and Young-Ju Jee
- Subjects
Physics ,Ferromagnetism ,Condensed matter physics ,Heisenberg model ,Condensed Matter::Strongly Correlated Electrons ,Invariant (mathematics) ,Spin (physics) ,Critical exponent ,Magnetic susceptibility ,Energy (signal processing) ,Magnetic field - Abstract
We have extracted the leading low-temperature contributions to the specific heat and the magnetic susceptibility from the thermodynamic Bethe-Ansatz equations of the SU(3) invariant ferromagnetic Heisenberg chain of spin 1. The critical exponents for the specific heat, the susceptibility, and the correlation length are $\ensuremath{\alpha}=\ensuremath{-}\frac{1}{2}$, $\ensuremath{\gamma}=2$, and $\ensuremath{\nu}=1$, respectively. The susceptibility and the correlation length exhibit logarithmic corrections, which are quenched by relatively small magnetic fields. In large fields, the energy required to flip a spin gives rise to an exponential activation.
- Published
- 1989