Determination of the orbital moment and crystal field splitting in LaTiO${}_3$

Abstract

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 Néel 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.

References in corpus (2)

• Orbital-Spin Structure and Coupling to Lattice in RTiO${}_3$ with R=La,Pr,Nd and Sm
• Lattice Distortion and Magnetic Ground State of YTiO${}_3$ and LaTiO${}_3$

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• The Mott insulator LaTiO_3 in heterostructures with SrTiO_3 is metallic
• Anisotropic Susceptibility of La_2-xSr_xCoO_4 related to the Spin States of Cobalt
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• Doping-driven Mott transition in La_{1-x}Sr_xTiO_3 via simultaneous electron and hole doping of t2g subbands
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• Muon spin relaxation study of LaTiO3 and YTiO3
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• Emergence of interfacial magnetism in strongly-correlated nickelate-titanate superlattices
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• Magnetic resonance study of rare-earth titanates