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research article

Localized Electronic States and the Superconducting Gap in Bi2sr2cacu2o8+Y

Quitmann, C.
•
Ma, J.
•
Kelley, R. J.
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1994
Physica C: Superconductivity and its Applications

Angle-resolved photoemission data taken on some Bi2Sr2CaCu2O8+y single crystals exhibit the formation of a superconducting gap in the absence of a quasiparticle normal state band. We observe the opening of the superconducting gap in the same regions of the Brillouin zone for which it is observed for samples that do exhibit a quasiparticle normal state. The absence of a dispersing quasiparticle normal state indicates that the normal state electronic states in these samples are almost localized in real space. Our data suggest that two types of carriers can coexist, and contribute to forming a superconducting gap, in these materials.

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Type
research article
DOI
10.1016/0921-4534(94)91734-5
Web of Science ID

WOS:A1994QC69400149

Author(s)
Quitmann, C.
Ma, J.
Kelley, R. J.
Margaritondo, G.  
Onellion, M.
Date Issued

1994

Publisher

Elsevier

Published in
Physica C: Superconductivity and its Applications
Volume

235

Start page

1019

End page

1020

Note

Ecole polytech fed lausanne,inst phys appl,ch-1015 lausanne,switzerland. Quitmann, c, univ wisconsin,dept phys,1150 univ ave,madison,wi 53706.

ISI Document Delivery No.: QC694

Part 2

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REVIEWED

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Available on Infoscience
October 3, 2006
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/234648
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