Open AccessX-RAY PHOTOELECTRON SPECTROSCOPY STUDY ON THE HOLE STATES IN YBa2Cu3O7 SUPERCONDUCTOR
Author(s) -
Nan-Lin Wang,
Manqing Tan,
Zhao Zhanchun,
Jingsong Wang,
Jingjie Sha,
Xianming Liu,
Mingrong Ji,
Qirui Zhang
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.821
Subject(s) - x ray photoelectron spectroscopy , superconductivity , valence (chemistry) , materials science , condensed matter physics , electronic structure , physics , nuclear magnetic resonance , quantum mechanics
XPS measurements have been performed on the orthogonal single phase YBa2Cu3O7 superconductor. The higher valence-like state of Cu is observed clearly. The electronic states corresponding to the peaks in Cu2p and O1s XPS are discussed. It is suggested that the extra holes due to the excess oxygen are created on the O2p orbit. The higher valence-like state of Cu corresponds to the combination of Cu3d9L and Cu3d10L3 states.