Dec 3, 2024
9:45am - 10:00am
Sheraton, Fifth Floor, The Fens
Kamini Gautam1,Yukako Fujishiro1,Oscar Fabelo2,Yoshinori Tokura1,Arima Taka-hisa1
RIKEN1,Institut Laue-Langevin2
Kamini Gautam1,Yukako Fujishiro1,Oscar Fabelo2,Yoshinori Tokura1,Arima Taka-hisa1
RIKEN1,Institut Laue-Langevin2
The EuTX
3 series, characterized by d-electron transition metals (T) and Si or Ge (X) with the tetragonal non-centrosymmetric BaNiSn
3-type crystal structure (space group I4mm), has emerged as a pivotal subject of study for understanding novel topological magnetic phases. Notably, recent neutron diffraction studies on EuNiGe
3 have revealed important insights into the hybrid skyrmion phases, marking a significant advancement in the field of topological magnetic states [1]. Expanding on the research in these systems, our study delves into another interesting compound of this family, EuRhGe
3. Its magnetic and transport properties reveal a complex magnetic phase diagram [2]. Interestingly, EuRhGe
3 shows a significant anomaly in magnetoresistance at the magnetic phase transitions [2].
Using zero-field neutron diffraction on EuRhGe
3 single crystals, we aim to uncover its nuclear and magnetic structures. We have found no crystallographic structural changes down to 2 K. An antiferromagnetic transition is observed at T
N~11.5 K. The magnetic propagation vector is along the c-axis (0, 0, 0.8), forming a proper screw-type magnetic arrangement that propagates along the c-axis at 2K. The observed magnetic structure differs from other reported Eu-based ternary germanides [3, 4].
1. D. Singh et al., Nat Commun 14, 8050 (2023).
2. A. Maurya et al., JMMM 401, 823 (2016).
3. Fabrèges et al., PRB 93, 214414 (2016).
4. T. Matsumura et al., JPSJ 91, 073703 (2022).