Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 80: Correlated Electrons: Poster
TT 80.3: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster E
Electron Spin Resonance of Eu on triangular layers in EuT2P2 (T=Mn, Zn, Cd). — •Jörg Sichelschmidt1, Pierre Chailloleau1, Sarah Krebber2, Asmaa El Mard2, Kristin Kliemt2, and Cornelius Krellner2 — 1Max-Planck-Insitut für Chemische Physik fester Stoffe, 01187 Dresden — 2Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt
Eu-based 122 systems in the trigonal CaAl2Si2 structure haven proven to show unusual transport properties such as anomalous Hall effect or colossal magnetoresistance, in the vicinity of an antiferromagnetically ordered state [1,2]. We investigated the electron spin resonance (ESR) of Eu2+ in EuT2P2 (T=Mn, Zn, Cd) single crystals. The temperature dependencies of ESR linewidth and resonance shift show a similar behaviour when approaching the Eu-ordered state – a divergence towards TN, indicating the growing importance of magnetic correlations and the build-up of internal magnetic fields.
[1] S. Krebber et al. Phys. Rev. B 108, 045116 (2023).
[2] X. Cao et al., Phys. Rev. Res. 4, 023100 (2022).
Keywords: ESR; CMR