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Photoemission study of Zn 1− x Co x O as a possible DMS
Author(s) -
Wi S. C.,
Kang J.S.,
Kim J. H.,
Lee S. S.,
Cho S.B.,
Kim B. J.,
Yoon S.,
Suh B. J.,
Han S. W.,
Kim K. H.,
Kim K. J.,
Kim B. S.,
Song H. J.,
Song H. J.,
Shin H. J.,
Shim J. H.,
Min B. I.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200304598
Subject(s) - x ray absorption spectroscopy , valence (chemistry) , chemistry , photoemission spectroscopy , absorption spectroscopy , spectroscopy , ion , crystallography , doping , inverse photoemission spectroscopy , electronic structure , analytical chemistry (journal) , x ray photoelectron spectroscopy , inorganic chemistry , angle resolved photoemission spectroscopy , materials science , physics , nuclear magnetic resonance , computational chemistry , optoelectronics , organic chemistry , quantum mechanics , chromatography
We report a photoemission spectroscopy (PES) and X‐ray absorption spectroscopy (XAS) study for bulk Zn 1− x Co x O samples ( x = 0 and 0.1). Both the Co 2p XAS and the Co 2p core‐level PES spectra show that the doped Co ions in Zn 1− x Co x O are in the divalent Co 2+ (d 7 ) states under the tetrahedral symmetry. A Co 2p → 3d resonant photoemission spectroscopy measurement shows that the Co 3d states lie near the top of the O 2p valence band. This work suggests that the doped Co ions in Zn 1−x Co x O substitute properly for the Zn sites with Co 2+ valence states. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)