IR Phonon signatures of multiferroicity in TbMn$_{2}$O$_{5}$

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dc.creatorAguilar, R. Valdés
dc.creatorSushkov, A. B.
dc.creatorPark, S.
dc.creatorCheong, S-W.
dc.creatorDrew, H. D.
dc.date2006-05-16
dc.date2006-08-07
dc.date.accessioned2026-07-07T08:37:47Z
dc.date.available2026-07-07T08:37:47Z
dc.descriptionThe infrared (IR) active phonons in multiferroic TbMn$_2$O$_5$ are studied as a function of temperature. Most of the symmetry allowed IR modes polarized along the \textit{a} and \textit{b} crystal axes are observed and the behavior of several \textit{b} polarized phonons is correlated with the magnetic and ferroelectric transitions. A high frequency \textit{b} polarized phonon only Raman allowed in the paraelectric phase becomes IR active at the ferroelectric transition. The IR strength of this mode is proportional to the square of the ferroelectric order parameter and gives a sensitive measure of the symmetry lowering lattice distortions in the ferroelectric phase.
dc.description5 pages, 5 figures. Replaced with response to comments from the referees. 1 reference added
dc.identifierhttps://arxiv.org/abs/cond-mat/0605416
dc.identifierhttp://arxiv.org/abs/cond-mat/0605416
dc.identifierPhysical Review B 74, 184404 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.184404
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140526
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleIR Phonon signatures of multiferroicity in TbMn$_{2}$O$_{5}$
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