Gapless spin liquid in a square-kagome lattice antiferromagnet

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dc.contributor.authorFujihala, Men_AU
dc.contributor.authorMorita, Ken_AU
dc.contributor.authorMole, RAen_AU
dc.contributor.authorMitsuda, Sen_AU
dc.contributor.authorTohyama, Ten_AU
dc.contributor.authorYano, SIen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorSota, Sen_AU
dc.contributor.authorKuwai, Ten_AU
dc.contributor.authorKoda, Aen_AU
dc.contributor.authorOkabe, Hen_AU
dc.contributor.authorLee, Hen_AU
dc.contributor.authorItoh, Hen_AU
dc.contributor.authorHawai, Ten_AU
dc.contributor.authorMasuda, Ten_AU
dc.contributor.authorSagayama, Hen_AU
dc.contributor.authorMatsuo, Aen_AU
dc.contributor.authorKindo, Ken_AU
dc.contributor.authorOhira-Kawamura, Sen_AU
dc.contributor.authorNakajima, Ken_AU
dc.date.accessioned2020-07-16T01:53:05Zen_AU
dc.date.available2020-07-16T01:53:05Zen_AU
dc.date.issued2020-06-09en_AU
dc.date.statistics2020-07-16en_AU
dc.description.abstractObservation of a quantum spin liquid (QSL) state is one of the most important goals in condensed-matter physics, as well as the development of new spintronic devices that support next-generation industries. The QSL in two dimensional quantum spin systems is expected to be due to geometrical magnetic frustration, and thus a kagome-based lattice is the most probable playground for QSL. Here, we report the first experimental results of the QSL state on a square-kagome quantum antiferromagnet, KCu6AlBiO4(SO4)5Cl. Comprehensive experimental studies via magnetic susceptibility, magnetisation, heat capacity, muon spin relaxation (μSR), and inelastic neutron scattering (INS) measurements reveal the formation of a gapless QSL at very low temperatures close to the ground state. The QSL behavior cannot be explained fully by a frustrated Heisenberg model with nearest-neighbor exchange interactions, providing a theoretical challenge to unveil the nature of the QSL state. © 2020 Springer Nature Limiteden_AU
dc.identifier.articlenumber3429en_AU
dc.identifier.citationFujihala, M., Morita, K., Mole, R., Mitsuda, S., Tohyama, T., Yano, S.-i., Yu, D., Sota, S., Kuwai, T., Koda, A., Okabe, H., Lee, H., Itoh, H., Hawai, T., Masuda, T., Sagayama, H., Matsuo, A., Kindo, K., Ohira-Kawamura, S., & Nakajima, K. (2020). Gapless spin liquid in a square-kagome lattice antiferromagnet. Nature Communications, 11(1), 3429. doi:10.1038/s41467-020-17235-zen_AU
dc.identifier.govdoc9761en_AU
dc.identifier.issn2041-1723en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleNature Communicationsen_AU
dc.identifier.urihttps://doi.org/10.1038/s41467-020-17235-zen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9678en_AU
dc.identifier.volume11en_AU
dc.language.isoenen_AU
dc.publisherSpringer Nature Limiteden_AU
dc.subjectQuantum statesen_AU
dc.subjectSpinen_AU
dc.subjectMatteren_AU
dc.subjectLiquidsen_AU
dc.subjectPhysicsen_AU
dc.subjectSpinen_AU
dc.subjectExperiment resultsen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectCrystal latticesen_AU
dc.subjectInelastic scatteringen_AU
dc.subjectHeisenberg modelen_AU
dc.titleGapless spin liquid in a square-kagome lattice antiferromagneten_AU
dc.typeJournal Articleen_AU
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