Regensburg 2025 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 37: Correlated Electrons: Poster
TT 37.27: Poster
Wednesday, March 19, 2025, 15:00–18:00, P4
Single-Crystal Study of Kagome Magnets CrRhAs and CrNiAs — •Franziska Breitner, Bin Shen, Anton Jesche, and Philipp Gegenwart — Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
CrRhAs and CrNiAs are metals with distorted kagome lattice of magnetic Cr atoms [1]. While CrRhAs is an antiferromagnet with a reported Néel temperature of 165 K for polycristalline samples, CrNiAs is ferromagnetic with TC=170 K. More recently, interesting properties such as anomalous Hall effect were predicted for CrRhAs [2].
We report the first growth of CrRhAs and CrNiAs single crystals utilizing the flux method and present their specific heat, magnetic susceptibility and electrical transport. Magnetoresistance and Hall effect for CrRhAs indicate no anomalous behaviors. For CrNiAs we also investigate the influences of hydrostatic pressure as well as partial substitution of As with P on the ferromagnetic transition.
Supported by DFG-TRR 360*492547816 and the Alexander von Humboldt Foundation.
[1] S. Ohta et al., J. Mag. Mag. Mater. 90, 171 (1990).
[2] Y. N. Huang et al., npj Quantum Mater. 8, 32 (2023).
Keywords: Kagome; Crystal Growth; CrRhAs; CrNiAs