Giant Magnetoelastic Interaction in UFe2
Using the unique coverage of (Q, ω) space available on the BRISP spectrometer, we have investigated the low Q dynamical response of a single crystal of UFe2. A strong inelastic signal was found with a dispersion corresponding to the transverse acoustic phonon branch, forbidden in the first Brillouin zone. A detailed analysis of the neutron intensities as a function of temperature and an applied magnetic field reveals a possible magnetic contribution superposed to this signal, which could originate from the magnon-phonon interaction, explaining the anomalous magnetoelastic behavior in this compound.
PAOLASINI Luigi;
FORMISANO F.;
CACIUFFO Roberto;
LANDER G.H.;
LAPERTOT G.;
2012-05-16
INSTITUTE OF PHYSICS
JRC65858
1742-6588,
http://iopscience.iop.org/1742-6596/340/1/012063,
https://publications.jrc.ec.europa.eu/repository/handle/JRC65858,
10.1088/1742-6596/340/1/012063,
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