教師資料查詢 | 類別: 期刊論文 | 教師: 彭維鋒 Pong, Way-faung (瀏覽個人網頁)

標題:Electron- and Hole-Doping Effects in Manganites Studied by X-Ray Absorption Spectroscopy
學年93
學期1
出版(發表)日期2005/01/01
作品名稱Electron- and Hole-Doping Effects in Manganites Studied by X-Ray Absorption Spectroscopy
作品名稱(其他語言)
著者Asokan, K.; Jan, J. C.; Rao, K. V. R.; Chiou, J. W.; Tsai, H. M.; 彭維鋒; Pong, Way-faung; Tsai, M. H.; Kumar. R.
單位淡江大學物理學系
出版者Kluwer
著錄名稱、卷期、頁數Hyperfine Interactions 160(1), pp.181-187
摘要We investigate the electronic structures of hole-doped, La0.7Ca0.3MnO3, and electron-doped, La0.7Ce0.3MnO3, manganites by x-ray absorption near edge structure (XANES) spectroscopy at the O and Mn K-edges. While, the O K-edge XANES results indicate that Ca and Ce doping induce holes in O 2p derived states, the Mn K-edge XANES do not give any evidence for creation of the Mn4+ (or Mn2+) ions by Ca (or Ce) dopants. Such results further questions the validity of double exchange mechanism in understanding the anomalous properties of manganites.
關鍵字electron-doping;electronic structures;hole-doping;manganites;XANES
語言英文
ISSN0304-3843
期刊性質國內
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
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