Experimental observation and computational study of the spin-gap excitation in Ba3BiRu2O9

Simple item page
dc.contributor.authorLing, CDen_AU
dc.contributor.authorHuang, Zen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorRols, Sen_AU
dc.contributor.authorJohnson, MRen_AU
dc.contributor.authorZbiri, Men_AU
dc.contributor.authorKimber, SAJen_AU
dc.contributor.authorHudspeth, Jen_AU
dc.contributor.authorAdroja, DTen_AU
dc.contributor.authorRule, KCen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorBlanchard, PERen_AU
dc.date.accessioned2021-06-03T04:21:10Zen_AU
dc.date.available2021-06-03T04:21:10Zen_AU
dc.date.issued2016-11-01en_AU
dc.date.statistics2021-05-24en_AU
dc.description.abstractBa3BiRu2O9 is a 6H-type perovskite compound containing face-sharing octahedral M2O9 (M=Ir, Ru) dimers, which are magnetically frustrated at low temperatures. On cooling through T∗=176 K, it undergoes a pronounced magnetostructural transition, which is not accompanied by any change in space group symmetry, long-range magnetic ordering, or charge ordering. Here, we report the first direct evidence from inelastic neutron scattering that this transition is due to an opening of a gap in the excitation spectra of dimers of low-spin Ru4+ (S=1) ions. X-ray absorption spectroscopy reveals a change in Ru-Ru orbital overlap at T∗, linking the emergence of this spin-gap excitation to the magnetostructural transition. Ab initio calculations point to a geometrically frustrated magnetic ground state due to antiferromagnetic interdimer exchange on a triangular Ru2O9 dimer lattice. X-ray total-scattering data rule out long-range magnetic ordering at low temperatures, consistent with this geometrically frustrated model. ©2016 American Physical Societyen_AU
dc.identifier.articlenumber174401en_AU
dc.identifier.citationLing, C. D., Huang, Z., Kennedy, B. J., Rols, S., Johnson, M. R., Zbiri, M., Kimber, S. A. J, Hudspeth, J., Adroja, D. T., Rule, K. C., Avdeev, M., & Blanchard, P. E. R. (2016). Experimental observation and computational study of the spin-gap excitation in Ba 3 BiRu2O9. Physical Review B, 94(17), 174401. doi:10.1103/PhysRevB.94.174401en_AU
dc.identifier.issn2469-9969en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttps://doi.org/10.1103/PhysRevB.94.174401en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10813en_AU
dc.identifier.volume94en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectAbsorption spectroscopyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectAntiferromagnetic materialsen_AU
dc.subjectTemperature range 0065-0273 Ken_AU
dc.subjectInelastic scatteringen_AU
dc.titleExperimental observation and computational study of the spin-gap excitation in Ba3BiRu2O9en_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles