Determination of the orbital moment and crystal-field splitting in LaTiO3

Determination of the orbital moment and crystal-field splitting in LaTiO3

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2005-02, Vol.94 (5), p.056401-056401
Hauptverfasser: Haverkort, M W, Hu, Z, Tanaka, A, Ghiringhelli, G, Roth, H, Cwik, M, Lorenz, T, Schüssler-Langeheine, C, Streltsov, S V, Mylnikova, A S, Anisimov, V I, de Nadai, C, Brookes, N B, Hsieh, H H, Lin, H-J, Chen, C T, Mizokawa, T, Taguchi, Y, Tokura, Y, Khomskii, D I, Tjeng, L H
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.94.056401