Regensburg 2022 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 12: Correlated Electrons: Materials
TT 12.10: Vortrag
Dienstag, 6. September 2022, 12:00–12:15, H22
Electron spin resonance studies on layered van-der-Waals magnets — •Joyal John Abraham1, 2, Yurii Senyk1, Alexey Alfonsov1, Yuliia Shemerliuk1, Sebastian Selter1, 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
Magnetic van-der-Waals (vdW) materials are compounds in which the planes consisting of magnetic atoms are held by weak vdW bonds. With a striking advantage of mechanical exfoliation to produce atomically thin layers, they are considered as promising candidates for studying exotic quantum phenomena and device application. Here, we present the investigation of magnetic vdW single crystals Mn2P2S6 and MnNiP2S6, using high field/frequency electron spin resonance. Frequency dependence of resonance field reveals a change of the anisotropy from easy-axis-like in the pure Mn compound to an easy-plane-like in the mixed compound. Temperature dependence of resonance field and linewidth for in-plane and out-of-plane orientations of magnetic field reveals a shift in resonance from the paramagnetic position even above the transition temperature (TN). This could be indicative of the presence of quasi-static spin-spin short-range correlations and hence provides insight about magnetic dimensionality of the studied material.