Terahertz spectroscopy of electromagnons in Eu_{1-x}Y_xMnO_3

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dc.creatorPimenov, A.
dc.creatorLoidl, A.
dc.creatorMukhin, A. A.
dc.creatorTravkin, V. D.
dc.creatorIvanov, V. Yu.
dc.creatorBalbashov, A. M.
dc.date2007-07-24
dc.date.accessioned2026-07-07T09:24:09Z
dc.date.available2026-07-07T09:24:09Z
dc.descriptionDielectric permittivity spectra of yttrium-doped EuMnO$_3$ in the composition range 0 =< x =< 0.5 have been investigated in the terahertz frequency range. Magnetoelectric contributions to the permittivity were observed in all compositions for ac electric fields parallel to the crystallographic a-axis. Well defined electromagnons exist for x >= 0.2 close to ν~ 20 cm^{-1} and with dielectric strength strongly increasing on doping. In addition to electromagnons, a broad contribution of magnetoelectric origin is observed for all compositions. For Eu_{0.8}Y_{0.2}MnO_3 the electromagnons can be suppressed by external magnetic fields which induce a canted antiferromagnetic phase. Magnetoelectric effects in the different doping regimes are discussed in detail.
dc.description7 pages, 9 figures included
dc.identifierhttps://arxiv.org/abs/0707.3614
dc.identifierhttp://arxiv.org/abs/0707.3614
dc.identifierPhys. Rev. B 77, 014438 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.014438
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/155995
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleTerahertz spectroscopy of electromagnons in Eu_{1-x}Y_xMnO_3
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