Spin dynamics of edge-sharing spin chains in SrCa13Cu24O41

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dc.contributor.authorDeng, GCen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorMole, RAen_AU
dc.contributor.authorPomjakushina, Een_AU
dc.contributor.authorConder, Ken_AU
dc.contributor.authorKenzelmann, Men_AU
dc.contributor.authorYano, SIen_AU
dc.contributor.authorWang, CWen_AU
dc.contributor.authorRule, KCen_AU
dc.contributor.authorGardner, JSen_AU
dc.contributor.authorLuo, HQen_AU
dc.contributor.authorLi, Sen_AU
dc.contributor.authorUlrich, Cen_AU
dc.contributor.authorImperia, Pen_AU
dc.contributor.authorRen, Wen_AU
dc.contributor.authorCao, SXen_AU
dc.contributor.authorMcIntyre, GJen_AU
dc.date.accessioned2021-12-17T02:05:56Zen_AU
dc.date.available2021-12-17T02:05:56Zen_AU
dc.date.issued2018-11-12en_AU
dc.date.statistics2021-11-30en_AU
dc.description.abstractThe low-energy magnetic excitation from the highly Ca-doped quasi-one-dimensional magnet SrCa13Cu24O41 was studied in the magnetic ordered state by using inelastic neutron scattering. We observed the gapless spin-wave excitation, dispersive along the a and c axes but nondispersive along the b axis. Such excitations are attributed to the spin wave from the spin-chain sublattice. Model fitting to the experimental data gives the nearest-neighbor interaction Jc as 5.4 meV and the interchain interaction Ja=4.4meV. Jc is antiferromagnetic and its value is close to the nearest-neighbor interactions of the similar edge-sharing spin-chain systems such as CuGeO3. Comparing with the hole-doped spin chains in Sr14Cu24O41, which shows a spin gap due to spin dimers formed around Zhang-Rice singlets, the chains in SrCa13Cu24 O41 show a gapless excitation in this paper. We ascribe such a change from gapped to gapless excitations to holes transferring away from the chain sublattice into the ladder sublattice upon Ca doping. ©2018 American Physical Societyen_AU
dc.identifier.articlenumber184411en_AU
dc.identifier.citationDeng, G., Yu, D., Mole, R., Pomjakushina, E., Conder, K., Kenzelmann, M., Yano, S.-I., Wang, C.-W., Rule, K. C., Gardner, J. S., Luo, H., Li, S., Ulrich, C., Imperia, P., Ren, W., Cao, S., & McIntyre, G. J. (2018). Spin dynamics of edge-sharing spin chains in SrCa13Cu24O41. Physical Review B, 98(18), 184411. doi:10.1103/PhysRevB.98.184411en_AU
dc.identifier.issn2469-9969en_AU
dc.identifier.issue18en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttps://doi.org/10.1103/PhysRevB.98.184411en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12535en_AU
dc.identifier.volume98en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectExchange interactionsen_AU
dc.subjectSpinen_AU
dc.subjectMagnetismen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectExcitationen_AU
dc.subjectInelastic scatteringen_AU
dc.titleSpin dynamics of edge-sharing spin chains in SrCa13Cu24O41en_AU
dc.typeJournal Articleen_AU
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