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Divalent EuRh2Si2 as a Reference for the Luttinger Theorem and Antiferromagnetism in Trivalent Heavy-Fermion YbRh2Si2

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  • نوع التسجيلة:
    Electronic Resource
  • الدخول الالكتروني :
    http://hdl.handle.net/10810/32803
    https://www.nature.com/articles/s41467-019-08688-y
    2041-1723
    https://www.nature.com/articles/s41467-019-08688-y
    info:eu-repo/grantAgreement/MINECO/FIS2016-75862-P
  • معلومة اضافية
    • Publisher Information:
      Nature Publishing Group 2019-02-15
    • Added Details:
      Física de materiales
      Materialen fisika
      Güttler, M.
      Generalov, A.
      Fujimori, S. I.
      Kummer, K.
      Chikina, A.
      Seiro, Silvia
      Danzenbächer, S.
      Koroteev, Yury M.
      Chulkov, Evgueni V.
      Radovic, M.
      Shi, M.
      Plumb, Nicholas C.
      Laubschat, C.
      Allen, J. W.
      Krellner, Cornelius
      Geibel, Christoph
      Vyalikh, D. V.
    • نبذة مختصرة :
      Application of the Luttinger theorem to the Kondo lattice YbRh2Si2 suggests that its large 4f derived Fermi surface (FS) in the paramagnetic (PM) regime should be similar in shape and volume to that of the divalent local-moment antiferromagnet (AFM) EuRh2Si2 in its PM regime. Here we show by angle-resolved photoemission spectroscopy that paramagnetic EuRh2Si2 has a large FS essentially similar to the one seen in YbRh2Si2 down to 1 K. In EuRh2Si2 the onset of AFM order below 24.5 K induces an extensive fragmentation of the FS due to Brillouin zone folding, intersection and resulting hybridization of the Fermi-surface sheets. Our results on EuRh2Si2 indicate that the formation of the AFM state in YbRh2Si2 is very likely also connected with similar changes in the FS, which have to be taken into account in the controversial analysis and discussion of anomalies observed at the quantum critical point in this system.
    • الموضوع:
      periodic kondo; surface; electrons; info:eu-repo/semantics/article
    • Note:
      This work was supported by the German Research Foundation (DFG) (through grant Nos. GE 602/4-1, KR3831/5-1 and Fermi-NEst; GRK1621 and SFB1143), Saint-Petersburg State University under Research Grant 15.61.202.2015, Spanish Ministry of Science and Innovation (Grant No. FIS2016-75862-P), and Tomsk State University Academic D.I. Mendeleev Fund Program (Grant No. 8.1.01.2017). The SX-ARPES experiment was performed under Proposal Numbers 2016A3810 and 2018B3811 at SPring-8 BL23SU. The present work was financially supported by JSPS KAKENHI Grant Numbers 16H01084 (J-Physics) and 18K03553.
      English
    • Other Numbers:
      ESUPV oai:addi.ehu.eus:10810/32803
      1346968405
    • Contributing Source:
      REPOSITORIO DE LA UNIVERSIDAD DEL PAIS
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1346968405
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