Global phase diagram and momentum distribution of single-particle excitations in Kondo insulators

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dc.citation.articleNumber085110en_US
dc.citation.issueNumber8en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber98en_US
dc.contributor.authorPixley, J.H.en_US
dc.contributor.authorYu, Rongen_US
dc.contributor.authorPaschen, Silkeen_US
dc.contributor.authorSi, Qimiaoen_US
dc.date.accessioned2018-11-09T14:59:58Zen_US
dc.date.available2018-11-09T14:59:58Zen_US
dc.date.issued2018en_US
dc.description.abstractKondo insulators are emerging as a simplified setting to study both magnetic and insulator-to-metal quantum phase transitions. Here, we study the half-filled Anderson lattice model defined on a magnetically frustrated Shastry-Sutherland geometry. We determine a “global” phase diagram that applies to both the local-moment and intermediate-valence regimes. This provides the theoretical basis for understanding how tuning a Kondo insulator by external parameters can close its hybridization gap, liberate the local-moment spins from the conduction electrons, and lead to a magnetically correlated metal. We also calculate the momentum distribution of the single-particle excitations in the Kondo insulating state, and show how Fermi-surface-like features emerge as a precursor to the actual Fermi surfaces of the Kondo-destroyed metals. The implications for an incipient Fermi surface and quantum phase transitions of Kondo insulators including SmB6 are discussed.en_US
dc.identifier.citationPixley, J.H., Yu, Rong, Paschen, Silke, et al.. "Global phase diagram and momentum distribution of single-particle excitations in Kondo insulators." <i>Physical Review B,</i> 98, no. 8 (2018) American Physical Society: https://doi.org/10.1103/PhysRevB.98.085110.en_US
dc.identifier.digitalPhysRevB.98.085110en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.98.085110en_US
dc.identifier.urihttps://hdl.handle.net/1911/103297en_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.titleGlobal phase diagram and momentum distribution of single-particle excitations in Kondo insulatorsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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