Determination of the orbital moment and crystal field splitting in LaTiO$_{3}$

Details Determination of the orbital moment and crystal field splitting in LaTiO$_{3}$ Determination of the orbital moment and crystal field splitting in LaTiO$_{3}$

2004-05-21

arxiv.org/abs/cond-mat/0405516v2

Phys. Rev. Lett. 94, 056401 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.94.056401

Utilizing a sum-rule in a spin-resolved photoelectron spectroscopic experiment with circularly polarized light, we show that the orbital moment in LaTiO$_3$ is strongly reduced both below and above the N\'{e}el temperature. Using Ti $L_{2,3}$ 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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