Evidence of the effect of the apical oxygen on the superconductivity of Y1−xCaxBa2Cu3Oy. An O-1s X-ray absorption spectroscopy study
學年 91
學期 2
出版(發表)日期 2003-02-01
作品名稱 Evidence of the effect of the apical oxygen on the superconductivity of Y1−xCaxBa2Cu3Oy. An O-1s X-ray absorption spectroscopy study
作品名稱(其他語言)
著者 Hsieh, C. H.; Chang, C.N.; Lee, S. B.; Kao, H.-C. I.; Chin, C. H.
單位 淡江大學化學學系
出版者 Amsterdam: Elsevier BV * North-Holland
著錄名稱、卷期、頁數 Physica C: Superconductivity and its Applications 384(3), pp.314-320
摘要 Two series of Y1-xCaxBa2Cu3Oy, /x=0.05 and 0.10, have been studied by O-1s X-ray absorption near-edge spectroscopy using synchrotron radiation. The characteristics of the decrease of Tc with the decrease of the oxygen content, y, are found different for the series of /x=0.05 and /x=0.10. The former reveals the importance of the holes on the apical oxygen sites. Through a cross examination between these two series of samples, direct evidences are observed that the reduction of the number of holes on the apical oxygen sites has a negative effect on the superconductivity in the underdoped region of Ca-doped YBCO system.
關鍵字 X-ray absorption spectrum;High-Tc superconductor;Y1−xCaxBa2Cu4Oy
語言 en
ISSN 0921-4534
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Chang, C. N.
審稿制度
國別 NLD
公開徵稿
出版型式 紙本
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