| 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 | en |
| ISSN | 0304-3843 |
| 期刊性質 | 國內 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27490 ) |
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