X‐ray photoelectron spectroscopy of Nd2−xCexCuO4−y (x=0 and 0.15) thin films
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Electronic structure of Nd2−xCexCuO4−y (x=0 and 0.15) thin films was examined by x-ray photoelectron spectroscopy. The films were prepared by rf magnetron sputtering and successive annealing under reducing condition (reduction). The reduced films showed semiconducting and superconducting behaviors depending on the value x. The Cu, O, and Nd core-level spectra revealed that the doped electrons were predominantly in CuO2 plane of the Nd2CuO4 crystal. The Cu core-level spectra from x=0.15 films before and after the reduction suggested that the reduction added electrons to Cu4s-O2p extended conduction band, and strengthened Cu O bond covalency to screen the core hole state by mobile itinerant electrons. Journal of Applied Physics is copyrighted by The American Institute of Physics.
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 68 (3), 1229-1232, 1990-08-01
American Institute of Physics
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詳細情報 詳細情報について
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- CRID
- 1571698602559228288
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- NII論文ID
- 120002441245
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- NII書誌ID
- AA00693547
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- ISSN
- 00218979
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- Web Site
- http://hdl.handle.net/10228/1504
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- 本文言語コード
- en
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- データソース種別
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