Characterisation of spin-waves in copper(II) deuteroformate tetradeuterate: A square ¤S¤=1/2 Heisenberg antiferromagnet

S.J. Clarke, A. Harrison, T.E. Mason, D. Visser

    Research output: Contribution to journalJournal article

    Abstract

    Copper(II) formate tetrahydrate (CFTH) is a model square S = 1/2 Heisenberg antiferromagnet with T-N = 16.54 +/- 0.05 K. The dispersion of spin-waves in the magnetic layers of a fully deuterated sample of this material has been mapped at 4.3 K by inelastic neutron scattering from the zone centre at 0.38 meV to the zone boundary at 14.8 meV, The data are described well by spin-wave theory with a small correction for quantum fluctuations, yielding a nearest-neighbour in-plane exchange constant of 6.3 +/- 0.2 meV, (C) 1999 Elsevier Science Ltd, All rights reserved.
    Original languageEnglish
    JournalSolid State Communications
    Volume112
    Issue number10
    Pages (from-to)561-564
    ISSN0038-1098
    DOIs
    Publication statusPublished - 1999

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