Crystal-field effects in Er.sub.3./sub.Ru.sub.4./sub.Al.sub.12./sub. with a distorted kagome lattice

0539064 - FZÚ 2021 RIV US eng J - Journal Article
Gorbunov, D.I. - Ishii, I. - Kurata, Y. - Andreev, Alexander V. - Suzuki, T. - Zherlitsyn, S. - Wosnitza, J.
Crystal-field effects in Er₃Ru₄Al₁₂ with a distorted kagome lattice.
Physical Review B. Roč. 101, č. 9 (2020), s. 1-6, č. článku 094415. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA ČR(CZ) GA19-00925S
Institutional support: RVO:68378271
Keywords : rare-earth intermetallics * antiferromagnets * high-field transitions * magnetoacoustics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.036, year: 2020
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevB.101.094415

We report on the magnetic and elastic properties of Er3Ru4Al12 in static and pulsed magnetic fields up to 58 T. From the ultrasound results, we obtain evidence for a phase transition at 2 K related to magnetic ordering. Furthermore, in the paramagnetic state, Er3Ru4Al12 shows pronounced anomalies in the magnetization and elastic moduli as a function of temperature and magnetic field. We explain our findings using a crystal-electric field (CEF) model that includes quadrupolar interactions and propose a CEF level scheme for this material. However, the CEF effects cannot explain all field-induced anomalies, which indicates that refined models are needed for explaining these.

Permanent Link: http://hdl.handle.net/11104/0316818