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

M. W. Haverkort; Z. Hu; A. Tanaka; G. Ghiringhelli; H. Roth; M. Cwik; T. Lorenz; C. Schuß̈ler-Langeheine; S. V. Streltsov; A. S. Mylnikova; V. I. Anisimov; C. De Nadai; N. B. Brookes; H. H. Hsieh; H. J. Lin; C. T. Chen; T. Mizokawa; Y. Taguchi; Y. Tokura; D. I. Khomskii; L. H. Tjeng

doi:10.1103/PhysRevLett.94.056401

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

M. W. Haverkort, Z. Hu, A. Tanaka, G. Ghiringhelli, H. Roth, M. Cwik, T. Lorenz, C. Schuß̈ler-Langeheine, S. V. Streltsov, A. S. Mylnikova, V. I. Anisimov, C. De Nadai, N. B. Brookes, H. H. Hsieh, H. J. Lin, C. T. Chen, T. Mizokawa, Y. Taguchi, Y. Tokura, D. I. KhomskiiL. H. Tjeng

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

49 Citations (Scopus)

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 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.

Original language	English
Article number	056401
Journal	Physical Review Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.94.056401
Publication status	Published - 2005 Feb 11

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ASJC Scopus subject areas

Physics and Astronomy(all)

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Haverkort, M. W., Hu, Z., Tanaka, A., Ghiringhelli, G., Roth, H., Cwik, M., Lorenz, T., Schuß̈ler-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., ... Tjeng, L. H. (2005). Determination of the orbital moment and crystal-field splitting in LaTiO₃. Physical Review Letters, 94(5), [056401]. https://doi.org/10.1103/PhysRevLett.94.056401

Determination of the orbital moment and crystal-field splitting in LaTiO₃. / Haverkort, M. W.; Hu, Z.; Tanaka, A.; Ghiringhelli, G.; Roth, H.; Cwik, M.; Lorenz, T.; Schuß̈ler-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.

In: Physical Review Letters, Vol. 94, No. 5, 056401, 11.02.2005.

Research output: Contribution to journal › Article

Haverkort, MW, Hu, Z, Tanaka, A, Ghiringhelli, G, Roth, H, Cwik, M, Lorenz, T, Schuß̈ler-Langeheine, C, Streltsov, SV, Mylnikova, AS, Anisimov, VI, De Nadai, C, Brookes, NB, Hsieh, HH, Lin, HJ, Chen, CT, Mizokawa, T, Taguchi, Y, Tokura, Y, Khomskii, DI & Tjeng, LH 2005, 'Determination of the orbital moment and crystal-field splitting in LaTiO₃', Physical Review Letters, vol. 94, no. 5, 056401. https://doi.org/10.1103/PhysRevLett.94.056401

Haverkort, M. W. ; Hu, Z. ; Tanaka, A. ; Ghiringhelli, G. ; Roth, H. ; Cwik, M. ; Lorenz, T. ; Schuß̈ler-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. / Determination of the orbital moment and crystal-field splitting in LaTiO₃. In: Physical Review Letters. 2005 ; Vol. 94, No. 5.

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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 N{\'e}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.",

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AU - Haverkort, M. W.

AU - Hu, Z.

AU - Tanaka, A.

AU - Ghiringhelli, G.

AU - Roth, H.

AU - Cwik, M.

AU - Lorenz, T.

AU - Schuß̈ler-Langeheine, C.

AU - Streltsov, S. V.

AU - Mylnikova, A. S.

AU - Anisimov, V. I.

AU - De Nadai, C.

AU - Brookes, N. B.

AU - Hsieh, H. H.

AU - Lin, H. J.

AU - Chen, C. T.

AU - Mizokawa, T.

AU - Taguchi, Y.

AU - Tokura, Y.

AU - Khomskii, D. I.

AU - Tjeng, L. H.

PY - 2005/2/11

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10.1103/PhysRevLett.94.056401