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- Title
Quantum Dots in YBa[sub 2]Cu[sub 3]O[sub 6 + ][sub x] Films with a Tetragonal Structure.
- Authors
Okunev, V. D.; Samoılenko, Z. A.; Isaev, V. A.; Klimov, A.; Lewandowski, S. J.
- Abstract
Experimental evidence is presented for the existence of clusters possessing metallic conductivity in epitaxial YBa[sub 2]Cu[sub 3]O[sub 6 + x] (x < 0.4) films with a tetragonal structure. Despite the overall dielectric state, the optical transmission spectra reveal the regions of absorption due to free charge carriers. The presence of metallic clusters is also confirmed by the X-ray diffraction data. At low temperatures, these metallic clusters are capable of converting into quantum dots responsible for the ρ(T) = const regions in the temperature dependence of the electric resistance. The process of cluster formation can be enhanced by high-power laser (KrF) radiation.
- Subjects
QUANTUM dots; BARIUM compounds
- Publication
Technical Physics Letters, 2002, Vol 28, Issue 1, p44
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/1.1448639