Intertwining of frustration with magneto-elastic coupling in the multiferroic LuMnO3

Shin Ichiro Yano, Despina Louca, Songxue Chi, Masaaki Matsuda, Yiming Qiu, John R.D. Copley, Sang Wook Cheong

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    3 Scopus citations

    Abstract

    Residual magnetic frustration in the multiferroic LuMnO3 may be key towards understanding magneto-elastic coupling in hexagonal manganites. Critical magnetic scattering present well above the magnetic ordering temperature TN persists below, as observed by inelastic neutron scattering. The magnetic fluctuations are confined in two dimensions implied by the characteristic wavevector dependence of the magnetic structure factor that changes from symmetric to asymmetric across TN. The low dimensionality of the magnetic structure is also evident in the temperature dependence of the commensurate antiferromagnetic intensity which follows a mean field exponent of β ∼ 0.2.

    Original languageEnglish
    Article number024601
    JournalJournal of the Physical Society of Japan
    Volume83
    Issue number2
    DOIs
    StatePublished - Feb 15 2014

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