Anisotropy of Mott-Hubbard gap transitions due to spin and orbital ordering in LaVO3 and YVO3

Details Anisotropy of Mott-Hubbard gap transitions due to spin and orbital ordering in LaVO3 and YVO3 Anisotropy of Mott-Hubbard gap transitions due to spin and orbital ordering in LaVO3 and YVO3

2002-07-28

arxiv.org/abs/cond-mat/0207664v1

J. Phys. Soc. Jpn. 71, 2086 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 4 figures

Scientific paper

10.1143/JPSJ.71.2086

Anisotropic optical spectra coupled with antiferromagnetic spin ordering (SO) and orbital ordering (OO) have been investigated for single crystals of LaVO_{3} and YVO_{3}. The orbital-dependent Mott-Hubbard gap transitions are observed around 2 eV. The transitions composed of the two peaks show distinct anisotropy and selection rules, reflecting the respective SO and OO patterns. The temperature dependence of the anisotropic transitions clearly indicates the SO/OO correlation and the evolution of the order parameters.

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