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arXiv · 1103.0608

Photo-induced spin-state change in itinerant correlated-electron system

Y. Kanamori·H. Matsueda·S. Ishihara
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Abstract

Photo-induced spin-state change in itinerant correlated-electron system is studied. The model Hamiltonians before and after photon-pumping are derived from the two-orbital Hubbard model with crystalline field splitting. A photon introduced in the low-spin band insulator induces a bound state of the high-spin state and a photoexcited hole. This bound state brings a characteristic peak in the optical absorption spectra in the photo-excited state. The resent results well explain the recent experimental results of the ultrafast optical spectroscopy in perovskite cobaltites.

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Y. Kanamori, H. Matsueda, S. Ishihara. 2011-03-03. Photo-induced spin-state change in itinerant correlated-electron system. https://doi.org/10.1103/physrevlett.107.167403

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