Two-Dimensional Behavior of YBa_{2}Cu_{3}O_{x} Films on SrTiO_{3} Substrates

• Authors: P.N. Mikheenko , S.J. Lewandowski
• Languages of publication: EN

Abstracts

EN

Long-term (up to 18 months) degradation of textured YBa_{2}Cu_{3}O_{x} films prepared by laser ablation and magnetron sputtering on single crystal SrΤiO_{3}, MgO and Al_{2}O_{3} substrates were investigated. All films at each stage of exposition displayed a clearly visible quasi-2D behavior. From the measurements of the Kosterlitz-Thouless temperature it could be concluded that the oxygen content and density of charge carriers remained constant. It follows that the main consequence of degradation is the omission of some planes from the transport of supercurrent and the samples could be described in the model of layered structure with variable number of conducting planes. Using this model we find that effective thickness of an isolated CuO_{2} plane in samples with greatest internal damage is ≈2Å.

Keywords

EN

74.62.Dh; 74.76.-w; 74.80.-g; 74.80.Dm

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 1
• Pages: 152-156

Dates

published

1997-07

Contributors

author

P.N. Mikheenko

• Centre for Superconducting and Electronic Materials, University of Wollongong, Wollongong 2522, Australia

author

S.J. Lewandowski

• Instytut Fizyki, Polish Academy of Sciences, Αl. Lotników 32/46, 02-668 Warszawa, Poland