An X-ray photoelectron spectroscopy study of Na-doped Bi-2212 cuprates is reported. Core level photoemission spectra were collected, at different take-off angles, from a monophasic crystal. The results of the lineshape analysis and the dependence of the core line intensity on the analyser take-off angle allowed us to rule out the presence of Na within the Bi-O layers, indicating that Na+ is very likely replacing Ca2+ or Si2+ ions.
A photoemission study of Na-induced hole doping in Bi2Sr2-y(Na-y)Ca1-x(Na-x)Cu2O8+delta
PARMIGIANI, FULVIO
1997-01-01
Abstract
An X-ray photoelectron spectroscopy study of Na-doped Bi-2212 cuprates is reported. Core level photoemission spectra were collected, at different take-off angles, from a monophasic crystal. The results of the lineshape analysis and the dependence of the core line intensity on the analyser take-off angle allowed us to rule out the presence of Na within the Bi-O layers, indicating that Na+ is very likely replacing Ca2+ or Si2+ ions.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
