Lattice excitations in NdFeO 3 through polarized optical spectroscopies [* Cross-Reference *]

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M. M. Gomes; R. Vilarinho; Hong Jian Zhao; Jorge Íñiguez; M. Mihálik; M. Mihalik; A. Maia; Veronica Goian; Dmitri Nuzhnyy; S. Kamba; J. Agostinho Moreira, 2026, "Lattice excitations in NdFeO 3 through polarized optical spectroscopies [* Cross-Reference *]", https://lore.list.lu/citation?persistentId=perma:LIST.TL84TD, LIST Open Repository, V1
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Abstract The possibility of inducing new polar and/or magnetic transient states through the pumping of optical phonons towards the non-linear regime has renewed the scientific interest in orthoferrites. Nonetheless, to perform these studies it is fundamental to have a deep knowledge of the lattice excitations at equilibrium conditions. In this work, we present a complete characterization of the optically-active zone-center phonons in NdFeO3 single crystals at room temperature and at 4 K, by means of polarized Raman and infrared spectroscopies. All the predicted optical phonons were successfully observed together with some of the crystal-field excitations. First-principles simulations further allow the eigenmode and symmetry assignments of the optical phonons. The calculated atomic motions of each mode are of significant interest, as they are common for all orthoferrites and to most of the large family of orthorhombic Pbnm perovskites. (2024-05-08)
***This entry has been automatically imported via OpenAlex by LIST harvest scripts. Please refer to https://doi.org/10.21203/rs.3.rs-4270554/v1 for the original and latest version of the publication*** (2026-07-01)
Subject Engineering; Physics
Keyword Lattice (music), Condensed matter physics, Materials science, Optical lattice, Physics
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