Lattice and spin excitations in multiferroic h-YbMnO3

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dc.contributor.authorLiu, Jen_AU
dc.contributor.authorToulouse, Cen_AU
dc.contributor.authorRovillain, Pen_AU
dc.contributor.authorCazayous, Men_AU
dc.contributor.authorGallais, Yen_AU
dc.contributor.authorMeasson, MAen_AU
dc.contributor.authorLee, Nen_AU
dc.contributor.authorCheong, SWen_AU
dc.contributor.authorSacuto, Aen_AU
dc.date.accessioned2014-05-23T05:04:42Zen_AU
dc.date.available2014-05-23T05:04:42Zen_AU
dc.date.issued2012-11-09en_AU
dc.date.statistics2014-05-23en_AU
dc.description.abstractLattice and spin excitations have been studied by Raman scattering in hexagonal YbMnO3 single crystals. The temperature dependences of the phonon modes show that the E-2 mode at 256 cm(-1) related to the displacement of Mn and O ions in a-b plane is coupled to the spin order. The A(1) phonon mode at 678 cm(-1) presents a soft mode behavior at the Neel temperature. Connected to the motion of the apical oxygen ions along the c direction, this mode controls directly the Mn-Mn interactions between adjacent Mn planes and the superexchange path. Crystal field and magnon mode excitations have been identified. The temperature investigation of the spin excitations shows that the spin structure is strongly influenced by the Yb-Mn interaction. Under a magnetic field along the c axis, we have investigated the magnetic reordering and its impact on the spin excitations. © 2012, American Physical Society.en_AU
dc.identifier.articlenumber184410en_AU
dc.identifier.citationLiu, J., Toulouse, C., Rovillain, P., Cazayous, M., Gallais, Y., Measson, M. A., Lee, N., Cheong, S. W., & Sacuto, A. (2012). Lattice and spin excitations in multiferroic h-YbMnO3. Physical Review B, 86(18), 184410. doi:10.1103/PhysRevB.86.184410en_AU
dc.identifier.govdoc4771en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.issue18en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.86.184410en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5636en_AU
dc.identifier.volume86en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectPhononsen_AU
dc.subjectRaman effecten_AU
dc.subjectFerroelectric materialsen_AU
dc.subjectScatteringen_AU
dc.subjectSpinen_AU
dc.subjectTemperature dependenceen_AU
dc.titleLattice and spin excitations in multiferroic h-YbMnO3en_AU
dc.typeJournal Articleen_AU
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