Abstract
A model is proposed for the LaTiO3 compound, which allows for the strong coupling of the lattice, orbital, and magnetic subsystems of this crystal. The interaction of the lattice with the electronic structure of the LaTiO3 compound is described by the vibronic Hamiltonian with the constants calculated using the ab initio Hartree-Fock-Roothaan method with the inclusion of the electron correlations. It is demonstrated that a considerable contribution to the formation of the orbital structure of the LaTiO3 compound is made by the next-nearest neighbors of the Ti3+ ion. The orbital-dependent superexchange interactions in LaTiO3 are described within the Hubbard model and agree well with experiment.
Similar content being viewed by others
References
M. Cwik, T. Lorenz, J. Baier, R. Müller, G. André, F. Bourée, F. Lichtenberg, A. Freimuth, R. Schmitz, E. Müller-Hartmann, and M. Braden, Phys. Rev. B: Condens. Matter 68, 060401 (2003).
G. I. Meijer, W. Henggeler, J. Brown, O.-S. Becker, J. G. Bednorz, C. Rossel, and P. Wachter, Phys. Rev. B: Condens. Matter 59, 11832 (1999).
M. W. Haverkort, Z. Hu, A. Tanaka, G. Ghiringhelli, H. Roth, M. Cwik, T. Lorenz, C. Schüßler-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, and L. H. Tjeng, Phys. Rev. Lett. 94, 056401 (2005).
C. Ulrich, A. Gössling, M. Grüninger, M. Guennou, H. Roth, M. Cwik, T. Lorenz, G. Khaliullin, and B. Keimer, Phys. Rev. Lett. 97, 157401 (2006).
B. Keimer, D. Casa, A. Ivanov, J. W. Lynn, M. Zimmermann, J. P. Hill, D. Gibbs, Y. Taguchi, and Y. Tokura, Phys. Rev. Lett. 85, 3946 (2000).
G. Khaliullin and S. Maekawa, Phys. Rev. Lett. 85, 3950 (2000).
M. Mochizuki and M. Imada, Phys. Rev. Lett. 91, 167203 (2003).
M. Mochizuki and M. Imada, New J. Phys. 6, 154 (2004).
V. Fritsch, J. Hemberger, M. V. Eremin, H.-A. Krug von Nidda, F. Lichtenberg, R. When, and A. Loidl, Phys. Rev. B: Condens. Matter 65, 212405 (2002).
E. Pavarini, S. Biermann, A. Poteryaev, A. I. Lichtenstein, A. Georges, and O. K. Andersen, Phys. Rev. Lett. 92, 176403 (2004).
R. Schmitz, O. Entin-Wohlman, A. Aharony, A. B. Harris, and E. Müller-Hartmann, Phys. Rev. B: Condens. Matter 71, 144412 (2005).
S. V. Streltsov, A. S. Mylnikova, A. O. Shorikov, Z. V. Pchelkina, D. I. Khomskii, and V. I. Anisimov, Phys. Rev. B: Condens. Matter 71, 245114 (2005).
I. V. Solovyev, Phys. Rev. B: Condens. Matter 74, 054412 (2006).
V. V. Iglamov and M. V. Eremin, Fiz. Tverd. Tela (St. Petersburg) 49(2), 221 (2007) [Phys. Solid State 49 (2), 229 (2007)].
M. I. Aroyo, A. Kirov, C. Capillas, J. M. Perez-Mato, and H. Wondratschek, Acta Crystallogr., Sect. A: Found. Crystallogr. 62, 115 (2006).
I. B. Bersuker and V. Z. Polinger, Vibronic Interactions in Molecules and Crystals (Nauka, Moscow, 1983; Springer, New York, 1989).
M. W. Schmidt, K. K. Baldridge, J. A. Boatz, S. T. Elbert, M. S. Gordon, J. J. Jensen, S. Koseki, N. Matsunaga, K. A. Nguyen, S. Su, T. L. Windus, M. Dupuis, and J. A. Montgomery, J. Comput. Chem. 14, 1347 (1993).
M. W. Schmidt and M. S. Gordon, Annu. Rev. Phys. Chem. 49, 233 (1998).
H. Nakano, J. Chem. Phys. 99, 7983 (1993).
V. Ya. Mitrofanov, A. E. Nikiforov, and V. I. Cherepanov, Spectroscopy of Exchange Coupled Complexes in Ionic Crystals (Nauka, Moscow, 1985) [in Russian].
K. I. Kugel’ and D. I. Khomskiĭ, Usp. Fiz. Nauk 136, 621 (1982) [Sov. Phys.—Usp. 25 231 (1982)].
T. Moriya, Phys. Rev. 120, 91 (1960).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.A. Mozhegorov, A.E. Nikiforov, A.V. Larin, A.V. Efremov, L.É. Gonchar’, P.A. Agzamova, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 9, pp. 1724–1727.
Rights and permissions
About this article
Cite this article
Mozhegorov, A.A., Nikiforov, A.E., Larin, A.V. et al. Structure and the electronic and magnetic properties of LaTiO3 . Phys. Solid State 50, 1795–1798 (2008). https://doi.org/10.1134/S1063783408090400
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063783408090400