Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 81: Correlated Electrons: Other Materials
TT 81.8: Vortrag
Donnerstag, 12. März 2026, 17:00–17:15, HSZ/0101
Synthesis of CsMn2P2 single crystals and study of their low temperature properties — •Martin Kostka, Ashiwini Balodhi, Matthias Kroll, N. S. Sangeetha, Sven Graus, Maik Golombiewski, Andreas Kreyssig, and Anna E. Böhmer — Experimental Physics IV, Ruhr-University Bochum, Bochum, Germany
CsMn2P2 is an intriguing material because it exhibits unusual dynamic magnetic behavior not present in other AMn2P2 compounds, likely related to a mixed Mn2+/Mn3+ valence state and enhanced magnetic fluctuations [1]. However, the synthesis of CsMn2P2 single crystals is a challenge due to the high reactivity of Cs, the high vapor pressure of Cs and P, and the high melting point of Mn. We succeeded in optimizing the growth conditions for reproducible synthesis of ∼1 mm sized CsMn2P2 single crystals by systematically studying various growth techniques. The resulting samples were characterized by x-ray diffraction, electron microscopy, energy-dispersive x-ray spectroscopy, and electrical-transport measurements. The electrical resistance shows multiple intriguing phase transitions. However, it is sample dependent and varies with synthesis parameters. A relation with the lattice parameter c is 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)
Keywords: CsMn2P2; single-crystal growth