"Double superconducting transition" in YBCO thin films
2002 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, Vol. 369, no 1-4, 295-299 p.Article in journal (Refereed) Published
Two 150 nm thick YBCO films have been investigated using flux noise and complex conductance measurements. In both experiments thermally excited vortices are studied. The first film shows a single transition, with Tc≈88.2 K and ΔTc≈0.3 K, while the second film shows a two-step transition with Tc1≈90.1 K and ΔTc≈0.1 K, and Tc2≈89.8 K and ΔTc≈0.15 K. The experimental results obtained for the double transition sample in combination with computer simulation data in Medvedyeva et al. (in this volume) indicate that this sample can be described as two weakly coupled homogeneous superconducting layers, one on top of the other, with different critical temperatures.
Place, publisher, year, edition, pages
2002. Vol. 369, no 1-4, 295-299 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-91200DOI: 10.1016/S0921-4534(01)01262-XOAI: oai:DiVA.org:uu-91200DiVA: diva2:163853