Photoemission From Single-Crystalline Bi-Sr-Ca-Cu-O

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An x-ray photoemission experiment was performed on high-Tc superconducting Bi-Sr-Ca-Cu-O single crystals with Tc∼80 K. It is found that Sr and Ca are interchangeable on the lattice sites of the crystal and that they are electronically distinguishable. This is consistent with the structure model for the crystal with formula unit i2(Sr,Ca)3Cu2Oy. We demonstrate how the distribution of Sr and Ca in the cation sites is determined by x-ray photoemission, which cannot be done by x-ray diffraction.

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  • Physical review B. Condensed matter

    Physical review B. Condensed matter 38 (10), 7051-7053, 1988-10-01

    Published for the American Physical Society by the American Institute of Physics

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