Physics – Condensed Matter – Superconductivity
Scientific paper
2010-04-23
Phys. Rev. Lett. 106, 137001 (2011)
Physics
Condensed Matter
Superconductivity
7 pages, 13 figures
Scientific paper
10.1103/PhysRevLett.106.137001
Investigating the anisotropy of superconductors permits an access to fundamental properties. Having succeeded in the fabrication of epitaxial superconducting LaFeAs(O,F) thin films we performed an extensive study of electrical transport properties. In face of multiband superconductivity we can demonstrate that a Blatter scaling of the angular dependent critical current densities can be adopted, although being originally developed for single band superconductors. In contrast to single band superconductors the mass anisotropy of LaFeAs(O,F) is temperature dependent. A very steep increase of the upper critical field and the irreversibility field can be observed at temperatures below 6K, indicating that the band with the smaller gap is in the dirty limit. This temperature dependence can be theoretically described by two dominating bands responsible for superconductivity. A pinning force scaling provides insight into the prevalent pinning mechanism and can be specified in terms of the Kramer model.
Freudenberger Jens
Haenisch Jens
Haindl Silvia
Holzapfel Bernhard
Iida Kei
No associations
LandOfFree
Critical current scaling and anisotropy in oxypnictide superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Critical current scaling and anisotropy in oxypnictide superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Critical current scaling and anisotropy in oxypnictide superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-695078