Journal Article

PUBDB-2023-04838

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Resonant inelastic x-ray scattering from electronic excitations in $α$ − RuCl$_3$ nanolayers

Yang, Z.Extern* ; Wang, L. ; Zhao, D. ; Luo, M. ; Laha, S. ; Güth, A. ; Taniguchi, T. ; Watanabe, K. ; Lotsch, B. V. ; Smet, J. H.Extern* ; Minola, M.Extern* ; Gretarsson, H.DESY* ; Keimer, B. (Corresponding author)Extern*

2023
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.108.L041406  doi:10.3204/PUBDB-2023-04838

Abstract: We present Ru L$_3$-edge resonant inelastic x-ray scattering (RIXS) measurements of spin-orbit and $d−d$ excitations in exfoliated nanolayers of the Kitaev spin-liquid candidate RuCl$_3$. Whereas the spin-orbit excitations are independent of thickness, we observe a pronounced redshift and broadening of the $d−d$ excitations in layers with thicknesses below ∼7 nm. Aided by model calculations, we attribute these effects to distortions of the RuCl$_6$ octahedra near the surface. Our study paves the way towards RIXS investigations of electronic excitations in various other two-dimensional materials and heterostructures.

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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. Com4Com - Collective modes in 4d-metal compounds and heterostructures (669550) (669550)

Experiment(s):

1. PETRA Beamline P01 (PETRA III)

Appears in the scientific report 2023

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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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