Phys. Rev. Lett. 44, 1295–1298 (1980)Neutron Scattering by Magnons of an Antiferromagnet with Modulated Spin AmplitudesReceived 7 January 1980; published in the issue dated 12 May 1980 Neutron scattering by the magnons of a spin-density-wave antiferromagnet is investigated with a one-dimensional local-moment model with long-range exchange. The magnon dispersion curves are unusual and the neutron inelastic scattering cross section exhibits peaks at a variety of neutron momentum transfers including the commensurable and incommensurable points. The general features of the calculation correlate remarkably well with recent neutron inelastic scattering data on chromium and strongly suggest a new interpretation of the data. © 1980 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.44.1295
DOI:
10.1103/PhysRevLett.44.1295
PACS:
75.25.+z, 75.50.Ee, 61.12.Fy
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