出版日期：2003-02-01 00:00:00

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

通訊作者：Chang, C. N.

國別：NLD

出版型式：紙本