Electronic structure and magnetic states in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CoO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>studied by photoemission and x-ray-absorption spectroscopy

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書誌事項

公開日
1997-07-15
権利情報
  • http://link.aps.org/licenses/aps-default-license
DOI
  • 10.1103/physrevb.56.1290
公開者
American Physical Society (APS)

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説明

We have studied the effects of hole doping on the electronic structure of La${}_{1\ensuremath{-}x}$Sr${}_{x}$CoO${}_{3}$ by photoemission and x-ray-absorption spectroscopy. The Co 2$p$ core-level and the valence-band spectra show charge-transfer satellites, which have been more obviously observed in 3$p$-3$d$ resonant-photoemission spectra. By Sr substitution for La in LaCoO${}_{3}$, the valence-band spectra do not show rigid-band behavior but change systematically and reflect the semiconductor-to-metal transition which occurs with hole doping. Only small changes with $x$ have been observed in the resonant-photoemission spectra. Combined with configuration-interaction cluster-model calculations, this observation suggests that the intermediate-spin state is realized in the ferromagnetic phase.

収録刊行物

  • Physical Review B

    Physical Review B 56 (3), 1290-1295, 1997-07-15

    American Physical Society (APS)

被引用文献 (18)*注記

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