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TT: Fachverband Tiefe Temperaturen

TT 80: Correlated Electrons: Poster

TT 80.18: Poster

Thursday, March 21, 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 orderT. Fujii1, M. Pillaca3, F. Bärtl2, J. Sichelschmidt1, S. Luther2, E. Häussler3, H. Yasuoka1, J. Wosnitza2, H. Kühne2, Th. Doert3, and •M. Baenitz11Max 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

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