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- W2989687112 abstract "摘要 本文报道用X射线光电子能谱(XPS)观测Ti与铋系高温超导体相互作用过程中电子结构的变化。结果表明,Ti原子夺走超导体内部的O,在表面形成Ti—O键,在XPS探测区域内,Bi—0,Cu—O键被破坏,Cu2+和Bi3+被还原为金属态。成键氧的被夺走影响了超导体的电子结构,用标准四探针法检测得到Ti的蒸镀使薄膜的超导转变温度降低,并且不能达到零电阻。 Abstract X-ray photoelectron spectroscopy has been used to investigate the interactions between Ti and bismuth-based superconductors. It is shown that Ti adatoms leach oxygen from the under-lyng superconductors, forming Ti-O bond on the surface. In the interface region, Cu-O and Bi-O bonds are destroyed, Cu2+ and Bi3+ are reduced to metallic atoms. The electronic structures of the superconductors are disrupted by the Ti adatoms. By using the standard four-probe method, it is found that after Ti deposition, the transition temperature of the thin film is 10K lower and the zero resistance can not be reached. 作者及机构信息 孟革, 沈电洪, 李楠, 谢侃, 林彰达, 王玉鹤, 李林 1. 中国科学院物理研究所,北京,100080 Authors and contacts MENG GE, SHEN DIAN-HONG, LI NAN, XIE KAN, LIN ZHANG-DA, WANG YU-HE, LI LIN 1. 中国科学院物理研究所,北京,100080 参考文献 施引文献" @default.
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- W2989687112 date "1991-01-01" @default.
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- W2989687112 title "XPS STUDIES OF Ti/BiSMUTH-BASED SUPERCONDUCTOR INTERFACE REACTIONS" @default.
- W2989687112 doi "https://doi.org/10.7498/aps.40.1992" @default.
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