Journal Article

FZJ-2024-05283

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Topological aspects of multi-k antiferromagnetism in cubic rare-earth compounds

Simeth, W. (Corresponding author) ; Rahn, M. C. ; Bauer, A. ; Meven, M.FZJ*RWTH* ; Pfleiderer, C.

2024
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-648X/ad24bb  doi:10.34734/FZJ-2024-05283

Abstract: We advertise rare-earth intermetallics with high-symmetry crystal structures and competing interactions as a possible materials platform hosting spin structures with non-trivial topological properties. Focusing on the series of cubic RCu compounds, where R = Ho, Er, Tm, the bulk properties of these systems display exceptionally rich magnetic phase diagrams hosting an abundance of different phase pockets characteristic of antiferromagnetic order in the presence of delicately balanced interactions. The electrical transport properties exhibit large anomalous contributions suggestive of topologically non-trivial winding in the electronic and magnetic structures. Neutron diffraction identifies spontaneous long-range magnetic order in terms of commensurate and incommensurate variations of (ππ0) antiferromagnetism with the possibility for various multi-k configurations. Motivated by general trends in these materials, we discuss the possible existence of topologically non-trivial winding in real and reciprocal space in the class of RCu compounds including antiferromagnetic skyrmion lattices. Putatively bringing together different limits of non-trivial topological winding in the same material, the combination of properties in RCu systems promises access to advanced functionalities.

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Crystallography (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. JARA-FIT (JARA-FIT)
3. Heinz Maier-Leibnitz Zentrum (MLZ)
4. Streumethoden (JCNS-2)
5. JCNS-4 (JCNS-4)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
3. DFG project G:(GEPRIS)107745057 - TRR 80: Von elektronischen Korrelationen zur Funktionalität (107745057) (107745057)
4. DFG project G:(GEPRIS)492547816 - TRR 360: Eingeschränkte Quantenmaterie (492547816) (492547816)
5. DFG project G:(GEPRIS)403191981 - Emergente Elektrodynamik Topologischer Spintexturen (403191981) (403191981)
6. DFG project G:(GEPRIS)390814868 - EXC 2111: Munich Center for Quantum Science and Technology (MCQST) (390814868) (390814868)
7. TOPFIT - Topological Spin Solitons for Information Technology (291079) (291079)
8. ExQuiSid - Extreme Quantum Matter in Solids (788031) (788031)
9. DFG project G:(GEPRIS)390858490 - EXC 2147: Komplexität und Topologie in Quantenmaterialien (CT.QMAT) (390858490) (390858490)
10. PSI-FELLOW-III-3i - International, Interdisciplinary & Intersectoral Postdoctoral Fellowships at the Paul Scherrer Institut (884104) (884104)

Experiment(s):

1. HEiDi: Single crystal diffractometer on hot source (SR9b)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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