Magnetic field effects in an octupolar quantum spin liquid candidate

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dc.citation.articleNumber094425en_US
dc.citation.issueNumber9en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber106en_US
dc.contributor.authorGao, Binen_US
dc.contributor.authorChen, Tongen_US
dc.contributor.authorYan, Hanen_US
dc.contributor.authorDuan, Chunruoen_US
dc.contributor.authorHuang, Chien-Lungen_US
dc.contributor.authorYao, Xu Pingen_US
dc.contributor.authorYe, Fengen_US
dc.contributor.authorBalz, Christianen_US
dc.contributor.authorStewart, J. Rossen_US
dc.contributor.authorNakajima, Kenjien_US
dc.contributor.authorOhira-Kawamura, Seikoen_US
dc.contributor.authorXu, Guangyongen_US
dc.contributor.authorXu, Xianghanen_US
dc.contributor.authorCheong, Sang-Wooken_US
dc.contributor.authorMorosan, Emiliaen_US
dc.contributor.authorNevidomskyy, Andriy H.en_US
dc.contributor.authorChen, Gangen_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2022-11-03T14:38:40Zen_US
dc.date.available2022-11-03T14:38:40Zen_US
dc.date.issued2022en_US
dc.description.abstractQuantum spin liquid (QSL) is a disordered state of quantum-mechanically entangled spins commonly arising from frustrated magnetic dipolar interactions. However, QSL in some pyrochlore magnets can also come from frustrated magnetic octupolar interactions. Although the key signature for both dipolar and octupolar interaction-driven QSL is the presence of a spin excitation continuum (spinons) arising from the spin quantum number fractionalization, an external magnetic field-induced ferromagnetic order will transform the spinons into conventional spin waves in a dipolar QSL. By contrast, in an octupole QSL, the spin waves carry octupole moments that do not couple, in the leading order, to an external magnetic field or to neutron moments but will contribute to the field dependence of the heat capacity. Here we use neutron scattering to show that the application of a large external magnetic field to Ce2Zr2O7, an octupolar QSL candidate, induces an Anderson-Higgs transition by condensing the spinons into a static ferromagnetic ordered state with octupolar spin waves invisible to neutrons but contributing to the heat capacity. Our theoretical calculations also provide a microscopic, qualitative understanding for the presence of octupole scattering at large wave vectors in Ce2Sn2O7 pyrochlore, and its absence in Ce2Zr2O7. Therefore, our results identify Ce2Zr2O7 as a strong candidate for an octupolar U(1) QSL, establishing that frustrated magnetic octupolar interactions are responsible for QSL properties in Ce-based pyrochlore magnets.en_US
dc.identifier.citationGao, Bin, Chen, Tong, Yan, Han, et al.. "Magnetic field effects in an octupolar quantum spin liquid candidate." <i>Physical Review B,</i> 106, no. 9 (2022) American Physical Society: https://doi.org/10.1103/PhysRevB.106.094425.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.106.094425en_US
dc.identifier.urihttps://hdl.handle.net/1911/113796en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleMagnetic field effects in an octupolar quantum spin liquid candidateen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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