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Proceedings Paper

Macroscopic transport properties and nanostructures in high temperature superconductors
Author(s): J. A. Jung; A. Welsh; M. M. Abdelhadi
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Paper Abstract

Recent experimental evidence, based on STM studies of BSCCO crystal surface, revealed the presence of nanostructures (nanodomains or stripe-like features) in this material. This raises two important questions: Are the nanostructures universal in high temperature superconductors (HTSC), i.e. are they also present in other HTSC compounds like YBCO and TBCCO? Are the nanostructures present in the bulk of a superconductor, or only on its surface? The presence of nanostructures in a superconductor implies an intrinsic phase separation and consequently a filamentary (percolative) flow of transport current. A superconductor could then behave like a glass with its properties governed by a 2D network of superconducting and normal filaments. We tested these ideas by investigating transport properties of HTSC (YBCO and TBCCO) in the normal and the superconducting states as a function of temperature, and their dependence on the annealing time.

Paper Details

Date Published: 30 August 2005
PDF: 10 pages
Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59321R (30 August 2005); doi: 10.1117/12.624108
Show Author Affiliations
J. A. Jung, Univ. of Alberta (Canada)
A. Welsh, Univ. of Alberta (Canada)
M. M. Abdelhadi, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)

Published in SPIE Proceedings Vol. 5932:
Strongly Correlated Electron Materials: Physics and Nanoengineering
Ivan Bozovic; Davor Pavuna, Editor(s)

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