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 › peer-review

53 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

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.94.056401

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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 › peer-review

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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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 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

Y1 - 2005/2/11

N2 - 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 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.

AB - 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 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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