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dc.contributor.authorDzsaber, S.
Prochaska, L.
Sidorenko, A.
Eguchi, G.
Svagera, R.
Waas, M.
Prokofiev, A.
Si, Q.
Paschen, S.
dc.date.accessioned 2017-07-25T18:04:13Z
dc.date.available 2017-07-25T18:04:13Z
dc.date.issued 2017
dc.identifier.citation Dzsaber, S., Prochaska, L., Sidorenko, A., et al.. "Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling." Physical Review Letters, 118, no. 24 (2017) https://doi.org/10.1103/PhysRevLett.118.246601.
dc.identifier.urihttp://hdl.handle.net/1911/95220
dc.description.abstract Recent theoretical studies of topologically nontrivial electronic states in Kondo insulators have pointed to the importance of spin-orbit coupling (SOC) for stabilizing these states. However, systematic experimental studies that tune the SOC parameter λ SOC in Kondo insulators remain elusive. The main reason is that variations of (chemical) pressure or doping strongly influence the Kondo coupling J K and the chemical potential μ —both essential parameters determining the ground state of the material—and thus possible λ SOC tuning effects have remained unnoticed. Here, we present the successful growth of the substitution series Ce 3 Bi 4 ( Pt 1 − x Pd x ) 3 ( 0 ≤ x ≤ 1 ) of the archetypal (noncentrosymmetric) Kondo insulator Ce 3 Bi 4 Pt 3 . The Pt-Pd substitution is isostructural, isoelectronic, and isosize, and it therefore is likely to leave J K and μ essentially unchanged. By contrast, the large mass difference between the 5 d element Pt and the 4 d element Pd leads to a large difference in λ SOC , which thus is the dominating tuning parameter in the series. Surprisingly, with increasing x (decreasing λ SOC ), we observe a Kondo insulator to semimetal transition, demonstrating an unprecedented drastic influence of the SOC. The fully substituted end compound Ce 3 Bi 4 Pd 3 shows thermodynamic signatures of a recently predicted Weyl-Kondo semimetal.
dc.language.iso eng
dc.rights Article 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.title Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling
dc.type Journal article
dc.citation.journalTitle Physical Review Letters
dc.citation.volumeNumber 118
dc.citation.issueNumber 24
dc.identifier.digital Kondo_Insulator
dc.contributor.publisher American Physical Society
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.118.246601
dc.type.publication publisher version
dc.citation.articleNumber 246601


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