X-ray absorption study of oxygen in the high-Tc superconductor Bi2Sr2CaCu2O8 near the interfaces to Cu, Ag and Au
(1996) In Physica C: Superconductivity and its Applications 265(1-2). p.113-120- Abstract
The influence on O 2p holes in single crystalline Bi2Sr2CaCu2O8 upon the interface formation to Cu, Ag and Au has been studied by O K edge X-ray absorption measurements. It was found that Cu reduces the amount of doping induced O 2p holes significantly in the vicinity of the interface, whereas Ag and Au gave a much smaller reduction of these states. Photoemission spectra confirmed previous findings that Cu causes a strong chemical reaction at the Bi-O surface of Bi2Sr2CaCu2O8, in contrast to Ag and Au which induced only a minimal reaction. The results support the opinion that the Bi-O layers are essential for the doping of the Cu-O2 layers... (More)
The influence on O 2p holes in single crystalline Bi2Sr2CaCu2O8 upon the interface formation to Cu, Ag and Au has been studied by O K edge X-ray absorption measurements. It was found that Cu reduces the amount of doping induced O 2p holes significantly in the vicinity of the interface, whereas Ag and Au gave a much smaller reduction of these states. Photoemission spectra confirmed previous findings that Cu causes a strong chemical reaction at the Bi-O surface of Bi2Sr2CaCu2O8, in contrast to Ag and Au which induced only a minimal reaction. The results support the opinion that the Bi-O layers are essential for the doping of the Cu-O2 layers in Bi2Sr2CaCu2O8.
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- author
- Qvarford, M. ; Söderholm, S. ; Tjernberg, O. ; Chiaia, G. ; Nylén, H. LU ; Nyholm, R. LU ; Lindau, I. LU ; Karlsson, U. O. and Bernhoff, H.
- organization
- publishing date
- 1996-07-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Cu-O planes, Hole concentration, Metal overlayer, Normal state properties, XAFS
- in
- Physica C: Superconductivity and its Applications
- volume
- 265
- issue
- 1-2
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0030195749
- ISSN
- 0921-4534
- language
- English
- LU publication?
- yes
- id
- b9a6c8b2-a6d0-4bee-af18-5f77ec648230
- date added to LUP
- 2016-04-29 10:54:45
- date last changed
- 2022-01-30 03:00:31
@article{b9a6c8b2-a6d0-4bee-af18-5f77ec648230, abstract = {{<p>The influence on O 2p holes in single crystalline Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8</sub> upon the interface formation to Cu, Ag and Au has been studied by O K edge X-ray absorption measurements. It was found that Cu reduces the amount of doping induced O 2p holes significantly in the vicinity of the interface, whereas Ag and Au gave a much smaller reduction of these states. Photoemission spectra confirmed previous findings that Cu causes a strong chemical reaction at the Bi-O surface of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8</sub>, in contrast to Ag and Au which induced only a minimal reaction. The results support the opinion that the Bi-O layers are essential for the doping of the Cu-O<sub>2</sub> layers in Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8</sub>.</p>}}, author = {{Qvarford, M. and Söderholm, S. and Tjernberg, O. and Chiaia, G. and Nylén, H. and Nyholm, R. and Lindau, I. and Karlsson, U. O. and Bernhoff, H.}}, issn = {{0921-4534}}, keywords = {{Cu-O planes; Hole concentration; Metal overlayer; Normal state properties; XAFS}}, language = {{eng}}, month = {{07}}, number = {{1-2}}, pages = {{113--120}}, publisher = {{Elsevier}}, series = {{Physica C: Superconductivity and its Applications}}, title = {{X-ray absorption study of oxygen in the high-Tc superconductor Bi2Sr2CaCu2O8 near the interfaces to Cu, Ag and Au}}, volume = {{265}}, year = {{1996}}, }