Journal Article

PUBDB-2024-01703

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetism in the axion insulator candidate Eu$_5$In$_2$Sb$_6$

Rahn, M. (Corresponding author)Extern* ; Wilson, M. N. ; Hicken, T. J. ; Pratt, F. L. ; Wang, C. ; Orlandi, F. ; Khalyavin, D. ; Manuel, P. ; Veiga, L. ; Bombardi, A. ; Francoual, S.DESY* ; Bereciartua Perez, P. J.DESY* ; Sukhanov, A. ; Thompson, J. D. ; Thomas, S. M. ; Rosa, P. F. S. ; Lancaster, T. ; Ronning, F. ; Janoschek, M. (Corresponding author)Extern*

2024
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.109.174404  doi:10.3204/PUBDB-2024-01703

Abstract: Eu$_5$In$_2$Sb$_6$ is a member of a family of orthorhombic nonsymmorphic rare-earth intermetallics that combines large localized magnetic moments and itinerant exchange with a low carrier density and perpendicular glide planes. This may result in special topological crystalline (wallpaper fermion) or axion insulating phases. Recent studies of Eu$_5$In$_2$Sb$_6$ single crystals have revealed colossal negative magnetoresistance and multiple magnetic phase transitions. Here, we clarify this ordering process using neutron scattering, resonant elastic x-ray scattering, muon spin-rotation, and magnetometry. The nonsymmorphic and multisite character of Eu$_5$In$_2$Sb$_6$ results in coplanar noncollinear magnetic structures with an Ising-like net magnetization along the a axis. A reordering transition, attributable to competing ferro- and antiferromagnetic couplings, manifests as the onset of a second commensurate Fourier component. In the absence of spatially resolved probes, the experimental evidence for this low-temperature state can be interpreted either as an unusual double-q structure or in a phase separation scenario. The net magnetization produces variable anisotropic hysteretic effects which also couple to charge transport. The implied potential for functional domain physics and topological transport suggests that this structural family may be a promising platform to implement concepts of topological antiferromagnetic spintronics.

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Contributing Institute(s):

1. PETRA-S (FS-PETRA-S)
2. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20210419 (I-20210419) (I-20210419)
4. DFG project 390858490 - EXC 2147: Komplexität und Topologie in Quantenmaterialien (CT.QMAT) (390858490) (390858490)

Experiment(s):

1. PETRA Beamline P09 (PETRA III)

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 ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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