Regensburg 2025 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 3: Correlated Magnetism – General
TT 3.11: Talk
Monday, March 17, 2025, 12:15–12:30, H32
Synthesis of CsMn2P2 and study of its low temperature physical properties — •Matthias Kroll, N. S. Sangeetha, Sven Graus, Maik Golombiewski, Andreas Kreyssig, and Anna E. Böhmer — Experimentalphysik IV, Ruhr-Universität Bochum, 44801 Bochum, Germany
The growth of CsMn2P2 single crystals is challenging due to the high vapor pressure of cesium and phosphorus and the high melting point of manganese. We optimized the growth conditions for the reproducible synthesis of CsMn2P2 single crystals by systematically studying various growth techniques. The quantity and quality of the phase of interest in the resulting samples was characterized by x-ray powder diffraction, electron microscopy and energy-dispersive x-ray analysis. We perform thermal-expansion and magnetic field-dependent resistivity measurements at low temperatures to analyze the nature of the three phase transitions at 64, 17 and 11 K that cannot be explained conclusively so far [1,2]. At 17 K, a dramatic change of the electrical-transport behavior as well as a large thermal-expansion anomaly are observed.
We acknowledge support by the Deutsche Forschungsgemeinschaft (DFG) under CRC/TRR 288 (Project A02).
[1] F. Hummel, Magnetism and superconductivity in layered manganese and iron pnictides. Diss. LMU (2015).
[2] H. G. von Schnering et al., ZAAC 628, 2772 (2002)
Keywords: CsMn2P2; singe-crystal growth; dilatometry