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Two-magnon excitations observed by neutron scattering in the two-dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4
Science
  • T. Huberman, Oxford Physics, Clarendon Laboratory
  • R. Coldea, Oxford Physics, Clarendon Laboratory
  • R. A. Cowley, Oxford Physics, Clarendon Laboratory
  • D. A. Tennant, University of St. Andrews, Scotland, United Kingdom
  • R. L. Leheny, Johns Hopkins University
  • Rebecca J. Christianson, Olin College of Engineering
  • C. D. Frost, Rutherford Appleton Laboratory, United Kingdom
Document Type
Article
Publication Date
1-1-2005
Disciplines
Abstract

The low-temperature magnetic excitations of the two-dimensional spin- 52 square-lattice Heisenberg antiferromagnetRb2MnF4 have been probed using pulsed inelastic neutron scattering. In addition to dominant sharppeaks identified with one-magnon excitations, a relatively weak continuum scattering is also observed at higherenergies. This is attributed to neutron scattering by pairs of magnons and the observed intensities are consistentwith predictions of spin wave theory.

Comments

© (2005) American Physical Society. The article appeared in Physical Review B, Vol 72, and may be found at http://prb.aps.org/abstract/PRB/v72/i1/e014413.

Citation Information
T. Huberman, R. Coldea, R. A. Cowley, D. A. Tennant, et al.. "Two-magnon excitations observed by neutron scattering in the two-dimensional spin-5/2 Heisenberg antiferromagnet Rb2MnF4" (2005)
Available at: http://works.bepress.com/rebecca_christianson/10/