Date of Original Version
The T=0 dynamical properties of the one‐dimensional s=1 XXZ model with an additional single‐site term are investigated by means of the recursion method. The dynamic structure factors Sμμ(q=π,ω), μ=x,z bear the characteristic signatures of several different phase transitions. In the s=1 Heisenberg antiferromagnet, the intrinsic linewidth (at fixed q) of Sμμ(q,ω) is larger for small q than for q near π, in contrast to well‐established results for the corresponding s=1/2 model.
Shu Zhang, Yongmin Yu, V. S. Viswanath, Joachim Stolze and Gerhard Müller. Dynamics of the one-dimensional spin-1 Heisenberg antiferromagnet with exchange and single-site anisotropy. J. Appl. Phys. 75 (1994), 5937-5939.
Available at: http://dx.doi.org/10.1063/1.355519