Spin-orbit-induced orbital excitations in Sr2RuO4 and Ca2RuO4: A resonant inelastic x-ray scattering study
Fatuzzo, C. G.; Dantz, M.; Fatale, S.; Olalde-Velasco, P.; Shaik, N. E.; Dalla Piazza, B.; Toth, S.; Pelliciari, J.; Fittipaldi, R.; Vecchione, A.; Kikugawa, N.; Brooks, J. S.; Rønnow, H. M.; Grioni, M.; Rüegg, Ch.; Schmitt, T.; Chang, J.
2015

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Abstract

High-resolution resonant inelastic x-ray scattering (RIXS) at the oxygen K edge has been used to study the orbital excitations of Ca2RuO4 and Sr2RuO4. In combination with linear dichroism x-ray absorption spectroscopy, the ruthenium 4d-orbital occupation and excitations were probed through their hybridization with the oxygen p orbitals. These results are described within a minimal model, taking into account crystal field splitting and a spin-orbit coupling λso=200 meV. The effects of spin-orbit interaction on the electronic structure and implications for the Mott and superconducting ground states of (Ca,Sr)2RuO4 are discussed.

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Title Spin-orbit-induced orbital excitations in Sr2RuO4 and Ca2RuO4: A resonant inelastic x-ray scattering study
Author(s) Fatuzzo, C. G. ; Dantz, M. ; Fatale, S. ; Olalde-Velasco, P. ; Shaik, N. E. ; Dalla Piazza, B. ; Toth, S. ; Pelliciari, J. ; Fittipaldi, R. ; Vecchione, A. ; Kikugawa, N. ; Brooks, J. S. ; Rønnow, H. M. ; Grioni, M. ; Rüegg, Ch. ; Schmitt, T. ; Chang, J.
Published in Physical Review B
Pagination 5
Volume 91
Issue 15
Pages 155104
Date 2015
Publisher College Pk, Amer Physical Soc
ISSN 1550-235X
Keywords
DOI https://doi.org/10.1103/PhysRevB.91.155104
Other identifier(s) View record in Web of Science
Laboratories LSE
LQM
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LQM - Laboratory for Quantum Magnetism
Scientific production and competences > SB - School of Basic Sciences > SB Archives > LSE - Laboratory of Photoelectron Spectroscopy
Work produced at EPFL
Journal Articles
Published
Record creation date 2015-04-28

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