Spin-wave Response in the Dilute Quasi-one-dimensional Ising-Like Antiferromagnet CsCo0.83Mg0.17Br3
Journal Article
·
· Physical Review B
- Pusan National University, Busan, Korea
- University of Alberta, Edmondton, Canada
- McMaster University
- National Research Council of Canada
- ORNL
Inelastic neutron-scattering profiles of spin waves in the dilute quasi-one-dimensional Ising-like antiferromagnet CsCo{sub 0.83}Mg{sub 0.17}Br{sub 3} have been investigated. Calculations of S{sup xx}(Q,{omega}), 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 {omega}{sub xx}(Q)=(2J)(1-5{var_epsilon}{sup 2}cos{sup 2}Qa+2{var_epsilon}{sup 2}){sup 1/2}, calculated by Ishimura and Shiba using perturbation theory.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1003232
- Journal Information:
- Physical Review B, Vol. 65, Issue 21; ISSN 0163--1829
- Country of Publication:
- United States
- Language:
- English
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