Electromagnon and phonon excitations in multiferroic TbMnO3

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dc.contributor.authorRovillain, Pen_AU
dc.contributor.authorLiu, Jen_AU
dc.contributor.authorCazayous, Men_AU
dc.contributor.authorGallais, Yen_AU
dc.contributor.authorMeasson, MAen_AU
dc.contributor.authorSakata, Hen_AU
dc.contributor.authorSacuto, Aen_AU
dc.date.accessioned2014-05-15T06:15:52Zen_AU
dc.date.available2014-05-15T06:15:52Zen_AU
dc.date.issued2012-07-30en_AU
dc.date.statistics2014-05-15en_AU
dc.description.abstractWe have performed Raman measurements on a TbMnO3 single crystal under magnetic field along the three crystallographic directions. The flip of the spin spiral plane creates an electromagnon excitation. In addition to the electromagnons induced by the Heisenberg coupling, we have detected the electromagnon created by the Dzyaloshinskii-Moriya interaction along the c axis. We have identified all the vibrational modes of TbMnO3. Their temperature dependencies show that only one phonon observed along the polarization axis is sensitive to the ferroelectric transition. This mode is tied to the Tb3+ ion displacements that contribute to the ferroelectric polarization. © 2012, American Physical Society.en_AU
dc.identifier.articlenumber014437en_AU
dc.identifier.citationRovillain, P., Liu, J., Cazayous, M., Gallais, Y., Measson, M. A., Sakata, H., & Sacuto, A. (2012). Electromagnon and phonon excitations in multiferroic TbMnO3. Physical Review B, 86, 014437. doi:10.1103/PhysRevB.86.014437en_AU
dc.identifier.govdoc4770en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.86.014437en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5579en_AU
dc.identifier.volume86en_AU
dc.language.isoenen_AU
dc.publisherAmerical Physical Societyen_AU
dc.subjectRaman spectroscopyen_AU
dc.subjectCrystalsen_AU
dc.subjectCrystallographyen_AU
dc.subjectPhononsen_AU
dc.subjectSpinen_AU
dc.subjectTemperature dependenceen_AU
dc.titleElectromagnon and phonon excitations in multiferroic TbMnO3en_AU
dc.typeJournal Articleen_AU
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