CoLEMISSION SPECTRA OFLaCoO3AT LOW TEMPERATURE

Y. Taguchi (), Y. Okabayashi, T. Uozumi, K. Mimura, K. Ichikawa, S. Kawamata, K. Okuda and O. Aita
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Y. Taguchi: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
Y. Okabayashi: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
T. Uozumi: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
K. Mimura: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
K. Ichikawa: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
S. Kawamata: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
K. Okuda: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan
O. Aita: Graduate School of Engineering, Osaka Prefecture University, Gakuencho 1-1, Sakai, Osaka 599-8531, Japan

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 871-875

Abstract: Co3d→2pX-ray emission spectra ofLaCoO3in the Co 2p photoabsorption region are measured at 40 and 300 K. The spectra mainly reveal features nearly independent of excitation photon energy. This indicates the highly covalent or strongly hybridized nature of the Co 3d state. The emission component showing resonant behavior is also observed. The temperature dependence of the resonant emission confirms that the wave function of Co 3d electrons is totally symmetric in the low-spin ground state and that for the spin state excited thermally through the magnetic transition around 100 K is not.

Date: 2002
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DOI: 10.1142/S0218625X02003081

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