Phonon anomalies in FeS

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dc.citation.issue5
dc.citation.rankM21
dc.citation.spage054306
dc.citation.volume97
dc.contributor.authorBaum, Andreas
dc.contributor.authorMilosavljević, Ana
dc.contributor.authorLazarević, Nenad
dc.contributor.authorRadonjić, Miloš
dc.contributor.authorNikolić, Božidar
dc.contributor.authorMitschek, Merlin
dc.contributor.authorMaranloo, Z. Inanloo
dc.contributor.authorŠćepanović, Maja
dc.contributor.authorGrujić-Brojčin, Mirjana
dc.contributor.authorStojilović, Nenad
dc.contributor.authorOpel, Matthias
dc.contributor.authorWang, Aifeng
dc.contributor.authorPetrović, Čedomir
dc.contributor.authorPopović, Zoran
dc.contributor.authorHackl, Rudi U.
dc.date.accessioned2024-07-05T10:09:44Z
dc.date.available2024-07-05T10:09:44Z
dc.date.issued2018-02-12
dc.description.abstractWe present results from light scattering experiments on tetragonal FeS with the focus placed on lattice dynamics. We identify the Raman active A1g and B1g phonon modes, a second order scattering process involving two acoustic phonons, and contributions from potentially defect-induced scattering. The temperature dependence between 300 and 20 K of all observed phonon energies is governed by the lattice contraction. Below 20 K the phonon energies increase by 0.5-1 cm-1, thus indicating putative short range magnetic order. Along with the experiments we performed lattice-dynamical simulations and a symmetry analysis for the phonons and potential overtones and find good agreement with the experiments. In particular, we argue that the two-phonon excitation observed in a gap between the optical branches becomes observable due to significant electron-phonon interaction.
dc.identifier.doi10.1103/physrevb.97.054306
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.scopus2-s2.0-85042155206
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/177
dc.identifier.wos000424744200004
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review B
dc.relation.ispartofabbrPhys. Rev. B
dc.rightsrestrictedAccess
dc.titlePhonon anomalies in FeS
dc.typeArticle
dc.type.versionpublishedVersion
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