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Systematic X-ray absorption study of hole doping in BSCCO - phases

R. Mueller·M. Schneider·R. Mitdank·C. Janowitz·R. -St. Unger·A. Krapf·H. Dwelk·W. Frentrup·R. Manzke
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Abstract

X-ray absorption spectroscopy (XAS) on the O 1s threshold was applied to Bi-based, single crystalline high temperature superconductors (HTc's), whose hole densities in the CuO2 planes was varied by different methods. XAS gives the intensity of the so-called pre-peak of the O 1s line due to the unoccupied part of the Zhang-Rice (ZR) singlet state. The effects of variation of the number n of CuO2 - planes per unit cell (n = 1,2,3) and the effect of La-substitution for Sr for the n = 1 and n = 2 phase were studied systematically. Furthermore the symmetry of the states could be probed by the polarization of the impinging radiation.

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R. Mueller, M. Schneider, R. Mitdank, C. Janowitz, R. -St. Unger, A. Krapf, H. Dwelk, W. Frentrup, R. Manzke. 2001-11-15. Systematic X-ray absorption study of hole doping in BSCCO - phases. https://doi.org/10.1016/s0921-4526(01)01279-0

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