Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 80: Correlated Electrons: Poster
TT 80.18: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster E
TlYbSe2 a new member of the J=1/2 triangular lattice Yb delafossite family: from spin liquid to field - induced magnetic order — T. Fujii1, M. Pillaca3, F. Bärtl2, J. Sichelschmidt1, S. Luther2, E. Häussler3, H. Yasuoka1, J. Wosnitza2, H. Kühne2, Th. Doert3, and •M. Baenitz1 — 1Max Planck Institute for Chemical Physics of Solids, Dresden — 2Hochfeld-Magnetlabor Dresden, HZDR — 3Faculty of Chemistry and Food Chemistry, TU Dresden
TlYbSe2 is a new member of the Yb delafossite family [1], which differs strongly from the previous alkali metal Yb delafossites. It is characterized by a much larger saturation field (about 25 T) and a higher transition temperature (about 2 K) of the ordered state. As for the other Yb delafossites, long ranged magnetic order is absent down to low temperatures in zero field. We report detailed macroscopic and microscopic measurements as a function of magnetic field and temperature on polycrystalline samples. Besides bulk methods such as magnetization and specific heat, spectroscopic methods such as ESR and NMR are applied.
[1] B. Schmidt, J. Sichelschmidt, K. M. Ranjith, Th. Doert, and M. Baenitz, Phys. Rev. B 103, 214445 (2021).
Keywords: triangular lattice; spin liquid; Yb delafossites; spin resonance; NMR