Journal Article

PUBDB-2024-01815

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Resonant Inelastic X-ray Scattering Studies of Magnetic Excitations in Ru-Based Quantum Magnets

Suzuki, H. (Corresponding author)Extern*

2024
Nihon Butsuri Gakkai T¯oky¯o

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Please use a persistent id in citations: doi:10.11316/butsuri.79.5_230

Abstract: Ruthenium compounds have served as a playground for fundamental concepts in modern condensed matter physics, encompassing unconventional superconductivity, Kitaev spin liquids, and solid-state analogues of the Higgs mode in particle physics. Quantitative description of these exotic phenomena requires experimental information on the interaction strengths among the 4d electrons. Our development of a new resonant inelastic X-ray scattering (RIXS) instrument dedicated to the tender X-ray regime (2–5 keV) allows systematic investigation of magnetic excitations in 4d transition metal compounds. The single magnon dispersion of a high-temperature antiferromagnet SrRu2O6 demonstrates the critical role of spin–orbit coupling in stabilizing the antiferromagnetic order. The magnetic excitation spectra of a Kitaev spin liquid candidate α-RuCl3 points to the dominance of bond-dependent Kitaev interactions. Our results exemplify the capability of state-of-the-art RIXS experiments combined with many-body theory calculations in providing insight into exotic magnetism in prominent model compounds.

Note: The copyright does not allow us to make the post-referee version open tothe public.Best regards,Hakuto Suzuki

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. Com4Com - Collective modes in 4d-metal compounds and heterostructures (669550) (669550)

Experiment(s):

1. PETRA Beamline P01 (PETRA III)

Appears in the scientific report 2024

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