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Evidence of pseudogap related core level shifts in Bi2Sr2Ca1-xYxCu2O8+delta
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1997 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 79, no 3, 499-502 p.Article in journal (Refereed) Published
Abstract [en]

Photoelectron spectroscopy data from Bi2Sr2Ca1-xYxCu2O8+delta Single crystals, for x = 0, 0.16, and 0.55, are presented. It is shown that there are core level shifts related to the opening of a pseudogap and that similar shifts are observed at the opening of the superconducting gap in optimally doped samples. This result is in agreement with pair formation above T-c as suggested by V.J. Emery and S.A. Kivelson [Nature (London) 374, 434 (1995)].

Place, publisher, year, edition, pages
1997. Vol. 79, no 3, 499-502 p.
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Natural Sciences
URN: urn:nbn:se:kth:diva-84205DOI: 10.1103/PhysRevLett.79.499ISI: A1997XL54900042OAI: diva2:499279
NR 20140805Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-13Bibliographically approved

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