Phonons in FeP

Abstract:

We present a comprehensive investigation of lattice dynamicsin the double-helix antiferromagnet FeP by means of high-resolution time-of-flight neutron spectroscopy and ab-initio calculations. We performed detailed analysis of the observedand calculated spectra for all high-symmetry points and high-symmetry directions of the Brillouin zone. We show that the DFT calculations quantitatively capture the essential featuresof the observed phonons, including both dispersions and scattering intensities. By making use of the detailed intensity comparison between the theory and the data, we were able to identify displacement vectors for the majority of theobserved modes.

IFMP Seminar
Date:Tuesday, October 20, 2020,
at 14:50REC/C213 (audience capacity: 11)

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