Spin-wave dispersion in a one-dimensional spin-½ Ising-like antiferromagnet

Bose, I. ; Chatterjee, S. (1983) Spin-wave dispersion in a one-dimensional spin-½ Ising-like antiferromagnet Journal of Physics C: Solid State Physics, 16 (5). pp. 947-954. ISSN 0022-3719

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Official URL: http://iopscience.iop.org/0022-3719/16/5/021

Related URL: http://dx.doi.org/10.1088/0022-3719/16/5/021


Recently a number of experiments have been performed to study the spin dynamics of CsCoCl3 which behaves like a spin-½ one-dimensional Ising-like antiferromagnet. Ishimura and Shiba (1980) have performed first-order perturbation calculations to explain various features of the spin dynamics for this system. Their first-order theory, however, does not give an adequate description of the experimental spin-wave dispersion and observed lineshape. In this work, the Ishimura-Shiba formalism is extended to the second order. Reasonable agreement is obtained with the experimental spin-wave dispersion. The lineshape is, however, modified only slightly from the lineshape obtained from the first-order theory.

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Deposited On:25 Jun 2012 13:08
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