期刊
PHYSICAL REVIEW B
卷 91, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.155104
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资金
- Swiss National Science Foundation and its Sinergia network Mott Physics Beyond the Heisenberg (MPBH) model
- Dysenos AG by Kabelwerke Brugg AG Holding
- Fachhochschule Nordwestschweiz
- Paul Scherrer Institut
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 lambda(so) = 200 meV. The effects of spin-orbit interaction on the electronic structure and implications for the Mott and superconducting ground states of (Ca,Sr)(2)RuO4 are discussed.
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