Quantum criticality enabled by intertwined degrees of freedom

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dc.citation.articleNumbere2300903120en_US
dc.citation.issueNumber30en_US
dc.citation.journalTitleProceedings of the National Academy of Sciencesen_US
dc.citation.volumeNumber120en_US
dc.contributor.authorLiu, Chia-Chuanen_US
dc.contributor.authorPaschen, Silkeen_US
dc.contributor.authorSi, Qimiaoen_US
dc.contributor.orgRice Center for Quantum Materialsen_US
dc.date.accessioned2024-05-03T15:51:11Zen_US
dc.date.available2024-05-03T15:51:11Zen_US
dc.date.issued2023en_US
dc.description.abstractStrange metals appear in a wide range of correlated materials. Electronic localization–delocalization and the expected loss of quasiparticles characterize beyond-Landau metallic quantum critical points and the associated strange metals. Typical settings involve local spins. Systems that contain entwined degrees of freedom offer new platforms to realize unusual forms of quantum criticality. Here, we study the fate of an SU(4) spin–orbital Kondo state in a multipolar Bose–Fermi Kondo model, which provides an effective description of a multipolar Kondo lattice, using a renormalization-group method. We show that at zero temperature, a generic trajectory in the model’s parameter space contains two quantum critical points, which are associated with the destruction of Kondo entanglement in the orbital and spin channels, respectively. Our asymptotically exact results reveal an overall phase diagram, provide the theoretical basis to understand puzzling recent experiments of a multipolar heavy fermion metal, and point to a means of designing different forms of quantum criticality and strange metallicity in a variety of strongly correlated systems.en_US
dc.identifier.citationLiu, C.-C., Paschen, S., & Si, Q. (2023). Quantum criticality enabled by intertwined degrees of freedom. Proceedings of the National Academy of Sciences, 120(30), e2300903120. https://doi.org/10.1073/pnas.2300903120en_US
dc.identifier.digitalliu-et-al-2023-quantum-criticality-enabled-by-intertwined-degrees-of-freedomen_US
dc.identifier.doihttps://doi.org/10.1073/pnas.2300903120en_US
dc.identifier.urihttps://hdl.handle.net/1911/115562en_US
dc.language.isoengen_US
dc.publisherNational Academy of Sciencesen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleQuantum criticality enabled by intertwined degrees of freedomen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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