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Shift of x-ray-photoelectron core levels in Bi sub 2 Sr sub 2 Ca sub 1 minus x Y sub x Cu sub 2 O sub y : An explanation by bond-valence-sum calculation

Journal Article · · Physical Review, B: Condensed Matter; (USA)
; ; ; ; ;  [1]
  1. Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-10-13 Shinonome, Koto-ku, Tokyo 135, Japan (JP)
Shifts of the binding energies of x-ray-photoelectron core levels are observed in the Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}{ital x}}Y{sub {ital x}}Cu{sub 2}O{sub {ital y}} system when {ital x} is varied. It is pointed out that this is due to the change in the chemical environment associated with the changes of the interatomic distances. We show that the so-called bond-valence-sum calculation is useful for the explanation of the shift; and propose that this method is generally applicable in explaining or predicting the shift of core levels in any system with a variable composition.
OSTI ID:
5845383
Journal Information:
Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:7; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English