Divalent EuRh2Si2 as a reference for the Luttinger theorem and antiferromagnetism in trivalent heavy-fermion YbRh2Si2.
- Güttler M Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062, Dresden, Germany.
- Generalov A MAX IV Laboratory, Lund University, Box 118, 22100, Lund, Sweden.
- Fujimori SI Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo, Hyogo, 679-5148, Japan.
- Kummer K European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble, France.
- Chikina A Swiss Light Source and Swiss FEL, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland.
- Seiro S IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany.
- Danzenbächer S Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062, Dresden, Germany.
- Koroteev YM Tomsk State University, Lenina Av., 36, Tomsk, Russia, 634050.
- Chulkov EV Tomsk State University, Lenina Av., 36, Tomsk, Russia, 634050.
- Radovic M Swiss Light Source and Swiss FEL, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland.
- Shi M Swiss Light Source and Swiss FEL, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland.
- Plumb NC Swiss Light Source and Swiss FEL, Paul Scherrer Institute, CH-5232, Villigen-PSI, Switzerland.
- Laubschat C Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062, Dresden, Germany.
- Allen JW Randall Laboratory, University of Michigan, 450 Church St, Ann Arbor, MI, 48109-1040, USA.
- Krellner C Kristall- und Materiallabor, Physikalisches Institut, Goethe-Universität Frankfurt, Max-von-Laue Strasse 1, 60438, Frankfurt am Main, Germany.
- Geibel C Max-Planck-Institut für Chemische Physik fester Stoffe, 01187, Dresden, Germany.
- Vyalikh DV Donostia International Physics Center (DIPC), 20080, San Sebastian, Spain. Denis.Vyalikh@dipc.org.
- 2019-02-17
Published in:
- Nature communications. - 2019
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
General Chemistry
English
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.
- Language
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- English
- Open access status
- gold
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- DOI 10.1038/s41467-019-08688-y
- PMID 30770811
- Persistent URL
- https://sonar.ch/global/documents/55950
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