Intertwining of Frustration with Magneto-Elastic Coupling in the Multiferroic LuMnO3
Shin-ichiro Yano, Despina Louca, Songxue Chi, Masaaki Matsuda, Yiming Qiu, John R. Copley, Sang-Wook Cheong
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 ΤN 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 ΤN. 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 β0.2.
multiferroic, neutron scattering, magnetic frustration
, Louca, D.
, Chi, S.
, Matsuda, M.
, Qiu, Y.
, Copley, J.
and Cheong, S.
Intertwining of Frustration with Magneto-Elastic Coupling in the Multiferroic LuMnO<sub>3</sub>, Journal of the Physical Society of Japan, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914110
(Accessed December 9, 2023)