Regensburg 2022 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 20: Topology: Poster Session
TT 20.3: Poster
Mittwoch, 7. September 2022, 15:00–18:00, P1
Low-dimensional spin correlations in Mn2P2S6 and MnNiP2S6 as revealed by ESR spectroscopy — •Yurii Senyk1, Joyal John Abraham1,2, Alexey Alfonsov1, Yuliia Shemerliuk1, Sebastian Selter1, 2, Saicharan Aswartham1, Bernd Büchner1, 3, and Vladislav Kataev1 — 1Leibniz IFW Dresden, D-01069 — 2Institute for Solid State and Materials Physics, TU Dresden, D-01069 — 3Institute for Solid State and Materials Physics and Wurzburg-Dresden Cluster of Excellence ct.qmat, TU Dresden, D-01062
Mn2P2S6 and MnNiP2S6 are members of the transition metal phosphorus trichalcogenide family which belongs to the layered van der Waals (vdW) materials class. Such compounds are considered to be attractive for designing novel spintronic devices due to their remarkable structural and magnetic properties. Here we report the electron spin resonance studies on single crystals of Mn2P2S6 and MnNiP2S6 using an X-band (9.56 GHz) spectrometer. Measurements were done in a wide temperature range and at various angles between the applied magnetic field and crystal axes. The obtained spectra can be well fitted to the Lorentzian lineshape enabling an accurate determination of the linewidth and the resonance field. Remarkably, the angular temperature dependences of the linewidth show signatures of the low-dimensional spin-spin correlations in the pure Mn compound whereas the mixed compound demonstrates a rather three-dimensional behaviour.