Resonant Inelastic X-ray Scattering Studies of Magnetic Excitations in Ru-Based Quantum Magnets
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- Suzuki Hakuto
- 東北大学学際科学フロンティア研究所
Bibliographic Information
- Other Title
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- 共鳴非弾性X線散乱によるルテニウム化合物の磁気励起の観測
Abstract
<p>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.</p>
Journal
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- Butsuri
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Butsuri 79 (5), 230-235, 2024-05-05
The Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1390581533760171648
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- ISSN
- 24238872
- 00290181
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed