Anomalous spin dynamics and orbital excitations in Mott-insulating titanates

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dc.contributor.authorUlrich, Cen_AU
dc.contributor.authorKhaliullin, Gen_AU
dc.contributor.authorAment, LJPen_AU
dc.contributor.authorGhiringhelli, Gen_AU
dc.contributor.authorBraicovich, Len_AU
dc.contributor.authorLorenz, Ten_AU
dc.contributor.authorTokura, Yen_AU
dc.contributor.authorvan den Brink, Jen_AU
dc.contributor.authorKeimer, Ben_AU
dc.date.accessioned2021-10-04T23:15:59Zen_AU
dc.date.available2021-10-04T23:15:59Zen_AU
dc.date.issued2010-02-03en_AU
dc.date.statistics2021-09-03en_AU
dc.description.abstractSpin and orbital degrees of freedom play an important role in the various phenomena of strongly correlated electron systems like unconventional high-temperature superconductivity in cuprates or colossal magnetoresistance in manganates. Our extensive neutron scattering experiments on the cubic perovskite titanates LaTiO3 and YTiO3 lead to the discovery of a highly unusual magnetic ground state which is in contradiction to the standard Goodenough-Kanamori rules, but indicates the presence of strong orbital fluctuations [1-4]. Raman light scattering spectra of LaTiO3 and YTiO3 exhibit unexpected features in the high energy range well above the phonon spectrum [5]. Using momentum dependent resonant inelastic x-ray scattering (RIXS) experiments in combination with theoretical calculations, we were able to identify these excitations as collective orbital excitations (orbital waves termed ‘orbitons’) [6-7].en_AU
dc.identifier.citationUlrich, C., Khaliullin, G., Ament, L. J. P., Ghiringhelli, G., Braicovich, L., Lorenz, T., Tokura, Y., van den Brink, J. & Keimer, B. (2010). Anomalous spin dynamics and orbital excitations in Mott-insulating titanates. Paper presented to the 34th Annual Condensed Matter and Materials Meeting 2010, Waiheke Island Resort, Waiheke, Auckland, New Zealand 2 - 5 February 2010. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2010/en_AU
dc.identifier.conferenceenddate5 February 2010en_AU
dc.identifier.conferencename4th Annual Condensed Matter and Materials Meeting 2010en_AU
dc.identifier.conferenceplaceAuckland, New Zealanden_AU
dc.identifier.conferencestartdate2 February 2010en_AU
dc.identifier.isbn978-0-646-53897-6en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2010/en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11872en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectSpinen_AU
dc.subjectDynamicsen_AU
dc.subjectExcitationen_AU
dc.subjectMott scatteringen_AU
dc.subjectTitanatesen_AU
dc.subjectTemperature range 0400-1000 Ken_AU
dc.subjectManganatesen_AU
dc.subjectScatteringen_AU
dc.titleAnomalous spin dynamics and orbital excitations in Mott-insulating titanatesen_AU
dc.typeConference Abstracten_AU
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