Macroscopic transport properties and nanostructures in high temperature superconductors

J. A. Jung; A. Welsh; M. M. Abdelhadi

doi:10.1117/12.624108

30 August 2005 Macroscopic transport properties and nanostructures in high temperature superconductors

J. A. Jung, A. Welsh, M. M. Abdelhadi

Proceedings Volume 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering; 59321R (2005) https://doi.org/10.1117/12.624108
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download Citation

J. A. Jung, A. Welsh, and M. M. Abdelhadi "Macroscopic transport properties and nanostructures in high temperature superconductors", Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59321R (30 August 2005); https://doi.org/10.1117/12.624108

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