Resonant inelastic x-ray scattering study of α-RuCl3: a progress report

Ru M3-edge resonant inelastic x-ray scattering (RIXS) measurements of α-RuCl3 with 27 meV resolution uncovers a spin-orbit exciton without noticeable splitting. Here, we extract values for the spin-orbit coupling constant (λ= 154 ± 2 meV) and trigonal distortion field energy (|Δ|< 65 meV) which s...

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Veröffentlicht in:	Journal of physics. Condensed matter 2020-04, Vol.32 (14)
Hauptverfasser:	Lebert, Blair Wilfred, Kim, Subin, Bisogni, Valentina, Jarrige, Ignace, Barbour, Andi M., Kim, Young-June
Format:	Artikel
Sprache:	eng
Schlagworte:	CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY crystal field honeycomb lattice Kitaev quantum spin liquid MATERIALS SCIENCE resonant inelastic x-ray scattering spin-orbit coupling
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Zusammenfassung:	Ru M3-edge resonant inelastic x-ray scattering (RIXS) measurements of α-RuCl3 with 27 meV resolution uncovers a spin-orbit exciton without noticeable splitting. Here, we extract values for the spin-orbit coupling constant (λ= 154 ± 2 meV) and trigonal distortion field energy (\|Δ\|< 65 meV) which support the jeff = 1/2 nature of α-RuCl3. We demonstrate the feasibility of M-edge RIXS for 4d systems, which offers ultra high-resolution RIXS of 4d systems until instrumentation for L-edge RIXS improves.
ISSN:	0953-8984 1361-648X
DOI:	10.1088/1361-648X/ab5595