Understanding electronic structure of Bi(Pb)-Sr-Ca-Cu-O compounds by XANES

Authors
Asokan, K Jan, JC Chiou, JW Tsai, HM Pong, WF Yang, CL Chien, FZ
Citation
K. Asokan et al., Understanding electronic structure of Bi(Pb)-Sr-Ca-Cu-O compounds by XANES, J ELEC SPEC, 114, 2001, pp. 837-840
Citations number
18
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
ISSN journal
03682048 → ACNP
Volume
114
Year of publication
2001
Pages
837 - 840
Database
ISI
SICI code
0368-2048(200103)114:<837:UESOBC>2.0.ZU;2-L
Abstract
We report X-ray absorption near edge structure (XANES) of Cu and O K-edges of superconducting [Bi(Pb)](2)Sr2CaCu2O8+delta (Bi-2212) and [Bi(Pb)](2)Sr2 Ca3Cu3O10+delta (Bi-2223) compounds. The spectral features of these two sys tems are compared based on existing assignments available in the literature . Spectroscopically, the intensity of Cu 1s --> 3d(x2-y2) from Cu K-edge sp ectra is different in these cuprates and the pre-edge peaks of O K-edges ar e better resolved in Bi-2223 attributed to arise from Cu-O, and metallic Bi -O layers. (C) 2001 Elsevier Science B.V. All rights reserved.