標題: Charge transfer process in Tl2Ba2Ca2Cu3O10 and Tl2Ba2CaCu2O8 thin films probed by polarized X-ray absorption spectroscopy
作者: Chen, JM
Liu, RG
Liu, RS
Lin, HC
Uen, TM
Juang, JY
Gou, YS
電子物理學系
Department of Electrophysics
公開日期: 26-九月-1997
摘要: We report high-resolution polarized O 1s X-ray absorption spectra of highly c-axis-oriented Tl2Ba2Ca2Cu3O10 (Tl-2223) and Tl2Ba2CaCu2O8 (Tl-2212) superconducting thin films. Near the O Is edge, the low-energy pre-edge peak at 528.3 eV has mainly O 2p(xy) symmetry, while the pre-edge peak at 529.4 eV has predominantly O 2p, character. The spectral weight of the pre-edge peak at 528.3 eV, originating from the CuO2 planes, increases similar to 60% from the Tl-2212 to Tl-2223 thin films. Conversely, the high-energy pre-edge peak at 530.3 eV, originating from the TlO planes, is lower in spectral intensity by similar to 30% in Tl-2223 as compared to the Tl-2212 thin film. The experimental results clearly demonstrate the pictures of the self doping due to the charge transfer from the CuO2 layers to the TlO layers. (C) 1997 Published by Elsevier Science B.V.
URI: http://hdl.handle.net/11536/302
ISSN: 0009-2614
期刊: CHEMICAL PHYSICS LETTERS
Volume: 276
Issue: 5-6
起始頁: 303
結束頁: 308
顯示於類別:期刊論文


文件中的檔案:

  1. A1997XZ47800002.pdf