Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 80: Correlated Electrons: Poster
TT 80.9: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster E
Heat capacity and magnetization studies of the kagome intermetallic compound YbCr6Ge6 — •Kilian Srowik1, Laura T. Corredor1, Bernd Büchner1,2, Sabine Wurmehl1, and Vitaliy Romaka1 — 1Leibniz Institute for Solid State and Materials Science Dresden (IFW Dresden), 01069 Dresden, Germany — 2Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01062, Dresden, Germany
Intermetallic compounds, with their mixed bonding character show a wide variety of physical properties, particularly electric and magnetic phenomena. Between them, compounds with rare-earth elements and transition metals owe their varied properties to the relationship between the localized f electrons of the rare-earth elements and the itinerant d electrons of the transition elements. Examples include the kagome metal candidate YCr6Ge6, incommensurate antiferromagnetism and successive spin reorientation in YMn6Ge6 and YbFe6Ge6, and the recent heavy fermion system YbV6Sn6. In this work, a newly synthesized YbCr6Ge6 bearing hexagonal MgFe6Ge6 structure, consisting of a triangular ytterbium sublattice and a kagome chromium sublattice, is investigated. Here, we report on heat capacity and magnetization measurements of this new compound at low temperatures and high magnetic fields. Contrary to most of its RECr6Ge6 sister compounds, a clear antiferromagnetic transition around 4 K is observed. Our results are discussed in the light of structural data.
Keywords: heavy fermion; f-electron systems; intermetallic compound