title: Determination of the orbital moment and crystal-field splitting in LaTiO3.
abstract: 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 Ne el temperature. Using Ti L2,3 x-ray absorption spectroscopy as a local probe, we found that the crystal-field splitting in the t2g subshell is about 0.12-0.30 eV. This large splitting does not facilitate the formation of an orbital liquid.
authors.affiliation: II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany.
authors.forename: M W
authors.initials: MW
authors.lastname: Haverkort
authors.forename: Z
authors.initials: Z
authors.lastname: Hu
authors.forename: A
authors.initials: A
authors.lastname: Tanaka
authors.forename: G
authors.initials: G
authors.lastname: Ghiringhelli
authors.forename: H
authors.initials: H
authors.lastname: Roth
authors.forename: M
authors.initials: M
authors.lastname: Cwik
authors.forename: T
authors.initials: T
authors.lastname: Lorenz
authors.forename: C
authors.initials: C
authors.lastname: Schüssler-Langeheine
authors.forename: S V
authors.initials: SV
authors.lastname: Streltsov
authors.forename: A S
authors.initials: AS
authors.lastname: Mylnikova
authors.forename: V I
authors.initials: VI
authors.lastname: Anisimov
authors.forename: C
authors.initials: C
authors.lastname: de Nadai
authors.forename: N B
authors.initials: NB
authors.lastname: Brookes
authors.forename: H H
authors.initials: HH
authors.lastname: Hsieh
authors.forename: H-J
authors.initials: HJ
authors.lastname: Lin
authors.forename: C T
authors.initials: CT
authors.lastname: Chen
authors.forename: T
authors.initials: T
authors.lastname: Mizokawa
authors.forename: Y
authors.initials: Y
authors.lastname: Taguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura
authors.forename: D I
authors.initials: DI
authors.lastname: Khomskii
authors.forename: L H
authors.initials: LH
authors.lastname: Tjeng