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Updated: Feb 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Study of crystal-field excitations and infrared active phonons in TbMnO3
S Mansouri1, S Jandl1, M Balli1
1Département de Physique, Regroupement Québécois sur les Matériaux de Pointe et Institut Quantique, Université de Sherbrooke, Sherbrooke J1K 2R1, Canada.
Abstract:
The Tb3+ (4f 8) crystal-field (CF) excitations and the infrared phonons in TbMnO3 are studied as a function of temperature and under an applied magnetic field. The phonon energy shifts reflect local displacement of the oxygen ions that contribute to the CF energy level shifts below 120 K and under magnetic field. The CF polarized transmission spectra provide interesting information about the debated nature of the excitations at 41, 65, 130 cm-1. We also evaluate the contribution of the charge transfer mechanism to the magnetoelectric process in TbMnO3 under magnetic field.
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