Spin waves in the spin-flop phase of RbMnF3

D.A. Tennant, D.F. McMorrow, S.E. Nagler, R.A. Cowley, B. Fåk

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The spin-wave excitations of the near-ideal 3D Heisenberg antiferromagnet RbMnF3 have been measured in the presence of an applied fled using neutron scattering. Detailed measurements of both the wave vector and field dependence of the excitations were made for fields up to 5.7 T. For applied fields >or=0.26 T, the spins undergo a spin-flop transition. In this phase the twofold degeneracy of the zero-field spin waves is lifted. A rigorous analysis of the data, allowing for the effects of instrumental resolution, shows that the excitations are well explained by linear spin-wave theory. No evidence is found for higher-order processes, such as have been found in systems of lower dimensionality.
    Original languageEnglish
    JournalJournal of Physics Condensed Matter
    Volume6
    Issue number47
    Pages (from-to)10341-10355
    ISSN0953-8984
    DOIs
    Publication statusPublished - 1994

    Fingerprint

    Dive into the research topics of 'Spin waves in the spin-flop phase of RbMnF3'. Together they form a unique fingerprint.

    Cite this