Photoemission study of chemical bond nature of (Cu,Tl)-1223 with T-c above130 K

Authors
Terada, N Tanaka, K Tanaka, Y Iyo, A Tokiwa, K Watanabe, T Ihara, H
Citation
N. Terada et al., Photoemission study of chemical bond nature of (Cu,Tl)-1223 with T-c above130 K, PHYSICA B, 284, 2000, pp. 1083-1084
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
1
Pages
1083 - 1084
Database
ISI
SICI code
0921-4526(200007)284:<1083:PSOCBN>2.0.ZU;2-L
Abstract
A change of electronic structure of (Cu,Tl)Ba2Ca2Cu3Oy with reduction annea ling has been studied by X-ray photoemission spectroscopy (XPS). By in situ measurement, photoelectron Fermi level is clearly observed. The change of XPS signals indicates that the treatment above 400 degrees C should cause e lectron movement from CuO2 planes to Tl-O, which should result in a re-incr ease of hole content and improvement of superconducting properties. (C) 200 0 Published by Elsevier Science B.V. All rights reserved.