Journal
PHYSICAL REVIEW LETTERS
Volume 94, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.94.056401
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Utilizing a sum rule in a spin-resolved photoelectron spectroscopic experiment with circularly polarized light, we show that the orbital moment in LaTiO3 is strongly reduced from its ionic value, both below and above the Neel temperature. Using Ti L-2,L-3 x-ray absorption spectroscopy as a local probe, we found that the crystal-field splitting in the t(2g) subshell is about 0.12-0.30 eV. This large splitting does not facilitate the formation of an orbital liquid.
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