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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2004     Display Documents



  history
ID: 192723.0, MPI für Festkörperforschung / FKF Publikationen 2004
Controllable Bi2Sr2CaCu2O8+δ/Au contacts fabricated at liquid-nitrogen temperatures
Authors:Zhu, X. B.; Zhao, S. P.; Chen, G. H.; Tao, H. J.; Lin, C. T.; Xie, S. S.; Yang, Q. S.
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Physica C
Volume:403
Issue / Number:1-2
Start Page:52
End Page:56
Review Status:not specified
Audience:Not Specified
Abstract / Description:Properties of the superconducting surface CuO2 double layers of a
cleaved Bi2Sr2CaCu2O8+delta (BSCCO) crystal in contact with An metal
films are studied using mesa-structured intrinsic Josephson junctions.
We show that a well-defined and experimentally controllable BSCCO/Au
contact can be achieved by the stabilization of the (interstitial)
oxygen atoms in the surface BiO layers at liquid nitrogen temperature
during fabrication. The surface CuO, double layers are found to be in a
metallic contact with An films and have a transition temperature T-c'
of similar to80 K for a BSCCO crystal with bulk T-c of 91 K.
Involvement of impurity atoms or molecules in the BSCCO/Au interface is
found to substantially reduce the value of T-c'. (C) 2003 Elsevier B.V.
All rights reserved.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China.
; Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China.
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
Identifiers:ISI:000189384100009 [ID No:1]
ISSN:0921-4534 [ID No:2]
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