Study of the influence of hole concentration on high-Tc superconductivity of cuprates Bi-2212 by X-ray photoelectron spectroscopy |
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| Institution: | 1. College of Life Sciences, Liaoning Normal University, Dalian 116081, China;2. Department of Biology, Dalian Medical University, Dalian 116044, China |
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| Abstract: | In this paper, we report the observation of X-ray photoelectron spectra (XPS), which were obtained from high-Tc superconducting compounds Bi-2212 with some percentage of 3d elements (Fe, Co, and Ni) substituted for copper. The changes in characteristics of XPS spectra Sr 3d and Cu 2p3/2 with the doping content were explained in the relation to the hole concentration on CuO2 planes, which resulted in high-Tc superconductivity. |
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