教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:High-temperature superconductivity in the presence of O 2p-Cu 3d holes: A spectroscopic study
學年76
學期1
出版(發表)日期1987/09/01
作品名稱High-temperature superconductivity in the presence of O 2p-Cu 3d holes: A spectroscopic study
作品名稱(其他語言)
著者Horn, S.; Cai, J.; Shaheen, S. A.; Jeon, Y.; Croft, M.; Chang, C. L.; den Boerand, M. L.
單位淡江大學物理學系
出版者College Park: American Physical Society
著錄名稱、卷期、頁數Physical Review B (Condensed Matter) 36(7), pp.3895-3898
摘要We report core-level spectroscopic measurements of several cuprate perovskites comparing those which exhibit superconductivity above 90 K to others which do not. Both x-ray photoemission and x-ray absorption results show that in the former Cu is more oxidized, as in CuO (nominally Cu2+), than in the latter. Trivalent Cu is clearly excluded. The O 1s core level is at higher binding energy in the superconductors, implying the presence of O 2p holes. The rare-earth valence in Ce- and Pr-based perovskites is more than 3+, apparently related to their failure to superconduct.
關鍵字
語言英文
ISSN0163-1829;1095-3795
期刊性質國外
收錄於SCI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本;電子版
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