Low-carrier density and fragile magnetism in a Kondo lattice system

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dc.citation.articleNumber085120
dc.citation.issueNumber8
dc.citation.journalTitlePhysical Review B
dc.citation.volumeNumber99
dc.contributor.authorRai, Binod K.
dc.contributor.authorOswald, Iain W.H.
dc.contributor.authorBan, Wenjing
dc.contributor.authorHuang, C.-L.
dc.contributor.authorLoganathan, V.
dc.contributor.authorHallas, A.M.
dc.contributor.authorWilson, M.N.
dc.contributor.authorLuke, G.M.
dc.contributor.authorHarriger, L.
dc.contributor.authorHuang, Q.
dc.contributor.authorLi, Y.
dc.contributor.authorDzsaber, Sami
dc.contributor.authorChan, Julia Y.
dc.contributor.authorWang, N.L.
dc.contributor.authorPaschen, Silke
dc.contributor.authorLynn, J.W.
dc.contributor.authorNevidomskyy, Andriy H.
dc.contributor.authorDai, Pengcheng
dc.contributor.authorSi, Q.
dc.contributor.authorMorosan, E.
dc.contributor.orgRice Center for Quantum Materials
dc.date.accessioned2019-08-13T15:19:41Z
dc.date.available2019-08-13T15:19:41Z
dc.date.issued2019
dc.description.abstractKondo-based semimetals and semiconductors are of extensive current interest as a viable platform for strongly correlated states in the dilute carrier limit. It is thus important to explore the routes to understand such systems. One established pathway is through the Kondo effect in metallic nonmagnetic analogs, in the so called half-filling case of one conduction electron and oneﾠ4fﾠelectron per site. Here, we demonstrate that Kondo-based semimetals develop out of conduction electrons with a low-carrier density in the presence of an even number of rare-earth sites. We do so by studying the Kondo materialﾠYb3Ir4Ge13ﾠalong with its closed-4f-shell counterpart,ﾠLu3Ir4Ge13. Through magnetotransport, optical conductivity, and thermodynamic measurements, we establish that the correlated semimetallic state ofﾠYb3Ir4Ge13ﾠbelow its Kondo temperature originates from the Kondo effect of a low-carrier conduction-electron background. In addition, it displays fragile magnetism at very low temperatures, which in turn, can be tuned to a Griffiths-phase-like regime through Lu-for-Yb substitution. These findings are connected with recent theoretical studies in simplified models. Our results can pave the way to exploring strong correlation physics in a semimetallic environment.
dc.identifier.citationRai, Binod K., Oswald, Iain W.H., Ban, Wenjing, et al.. "Low-carrier density and fragile magnetism in a Kondo lattice system." <i>Physical Review B,</i> 99, no. 8 (2019) American Physical Society: https://doi.org/10.1103/PhysRevB.99.085120.
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.99.085120
dc.identifier.urihttps://hdl.handle.net/1911/106229
dc.language.isoeng
dc.publisherAmerican Physical Society
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.
dc.titleLow-carrier density and fragile magnetism in a Kondo lattice system
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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