Spin dynamics of quasi-one-dimensional spin-ladder system SrCa13Cu24O41 in the long-range magnetic ordering state

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dc.contributor.authorDeng, GCen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorMole, RAen_AU
dc.contributor.authorYano, SIen_AU
dc.contributor.authorWang, CWen_AU
dc.contributor.authorRule, KCen_AU
dc.contributor.authorGardner, JSen_AU
dc.contributor.authorLuo, Hen_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.authorPomjakushina, Een_AU
dc.contributor.authorConder, Ken_AU
dc.contributor.authorKenzelmann, Men_AU
dc.contributor.authorMcIntyre, GJen_AU
dc.date.accessioned2021-12-20T04:09:24Zen_AU
dc.date.available2021-12-20T04:09:24Zen_AU
dc.date.issued2018-01-31en_AU
dc.date.statistics2021-10-11en_AU
dc.description.abstractSr14-xCaxCu24O41 is a quasi-one-dimensional magnet, which consists of two sublattices: spin ladder and spin chain, forming an incommensurate crystal structure along the c axis, namely, the ladder leg or chain direction. The highly Ca-doped compounds undergo a superconducting phase transition under hydrostatic pressure ~ 3GPa, which is really intriguing since the hole-doped even-leg spin-ladder system was theoretically predicted as superconductors by charge-pairing mechanism through antiferromagnetic interaction on the rungs of spin ladders. In the previous study, we discovered that all compounds with different Ca content have a singlet ground state with a spin-gap ~ 32meV. In the highly Ca-doped sample SrCa13Cu24O41, a long-range magnetic ordering takes place at ~ 4.2K. Interestingly, the singlet spin-liquid state and the long-range magnetic ordering coexist in this compound. In this study, we further investigated its spin dynamics in the ordered phase by using inelastic neutron scattering on PELICAN and SIKA at OPAL. We observed the gapless spin-wave excitation, dispersive along the a and c axes but nondispersive along the b axis, indicating the nature of a 2D magnet. A dynamic model has been proposed to fit the experimental data, indicating three major exchange interactions along rungs (JR), legs (JL) and between neighbor ladders (JInter). This study helps us to understand the origin of the spin liquid ground state in this low-dimensional magnet, in which hole-doping should be attributed to induce the long-range magnetic ordering due to the disorder-induced order effect.en_AU
dc.identifier.citationDeng, G., Yu, D., Mole, R., Yano, S., Wang, C.-W., Rule, K. C., Gardner, J. S., Luo, H., Li, S., Ulrich, C., Imperia, P., Ren, W., Cao, S., Pomjakushina, E., Conder, K., Kenzelmann, M., & McIntyre, G. J. (2018). Spin dynamics of quasi-one-dimensional spin-ladder system SrCa13Cu24O41 in the long-range magnetic ordering state. Poster presented to the 42nd Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, NSW, 30th January – 2nd February 2018, (pp. 80). Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2018/Wagga_2018_Conference_Handbook.pdfen_AU
dc.identifier.conferenceenddate2 February 2018en_AU
dc.identifier.conferencename42nd Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, NSWen_AU
dc.identifier.conferencestartdate30 January 2018en_AU
dc.identifier.otherWP12en_AU
dc.identifier.pagination80en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2018/Wagga_2018_Conference_Handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12580en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectSpinen_AU
dc.subjectDynamicsen_AU
dc.subjectStrontiumen_AU
dc.subjectCalciumen_AU
dc.subjectCopperen_AU
dc.subjectCrystal latticesen_AU
dc.subjectDoped materialsen_AU
dc.subjectPhase transformationsen_AU
dc.subjectHydrostaticsen_AU
dc.subjectMeasuring instrumentsen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectOrder-disorder transformationsen_AU
dc.titleSpin dynamics of quasi-one-dimensional spin-ladder system SrCa13Cu24O41 in the long-range magnetic ordering stateen_AU
dc.typeConference Posteren_AU
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