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.
| Original language | English |
|---|---|
| Article number | 59321R |
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5932 |
| DOIs | |
| State | Published - 2005 |
| Event | Strongly Correlated Electron Materials: Physics and Nanoengineering - San Diego, CA, United States Duration: 31 Jul 2005 → 4 Aug 2005 |
Keywords
- Electrical transport
- High temperature superconductors
- Nanostructures
- Oxygen redistribution
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering