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Core-level and valence-band electronic states of Bi2Sr2CalxYxCu2Oy studied by photoemission

✍ Scribed by Y. Fukuda; K. Terashima; Y. Nakanishi; T. Suzuki; M. Nagoshi; Y. Syono; M. Tachiki

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 116 KB
Volume: 162-164
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(89)90710-7

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✦ Synopsis

Core-level and valence-band electronic structures of Bi2Sr2Cal-xYxCu2Oy (x=0,O.4, and 0.7) have been studied by X-ray and UV photoemlsslon spectroscopy. A Fermi edge is observed for x=0.4 as well as for x=0. It is found that the density of states at the Fermi level and the intensity of a 1.2-eV peak are reduced but the binding energies of Bi 5d are not changed by substitution of Y for Ca. The origin of the states and the structure is discussed In terms of 02p bands mainly in the Cu-O layers.

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