Spin-wave response in the dilute quasi-one-dimensional Ising-like antiferromagnet CsCo0.83Mg0.17Br3

Y. S. Yang, F. Marsiglio, M. Madsen, B. D. Gaulin, R. B. Rogge, J. A. Fernandez-Baca

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Abstract

Inelastic neutron-scattering profiles of spin waves in the dilute quasi-one-dimensional Ising-like antiferromagnet CsCa0.83Mg0.17Br3 have been investigated. Calculations of Sxx(Q,w), based on an effective spin Hamiltonian, accurately describe the experimental spin-wave spectrum of the 2J mode. The Q dependence of the energy of this spin-wave mode follows the analytical prediction wxx(Q)=(2J)(1-5ε2 cos2 Qa+2ε2)1/2, calculated by Ishimura and Shiba using perturbation theory.

Original languageEnglish
Article number212408
Pages (from-to)2124081-2124084
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number21
DOIs
StatePublished - Jun 1 2002

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