Publications in Scientific Journals:
F. Hengstberger, M. Eisterer, H. W. Weber:
"Numerical extension of the power law Jc(B) to zero field in thin superconducting films";
Physica C: Superconductivity and its Applications,
470
(2010),
1041
- 1042.
English abstract:
Numerical simulations of the current and field distribution in thin superconducting films are carried out
for a given material law Jc(B) and as a function of the applied field H, taking the sample´s self-field into
account. The dependence of the critical current density on the applied field Jc(H) is computed for comparison
with experiment, considering the geometry of transport measurements.
We show that extrapolating the high-field power law Jc α B-α to the lowest fields results in a finite critical
current at zero applied field Jc(H = 0), despite the singularity of Jc(B). Moreover, particular features of
the experiment, such as a low field plateau in Jc(H), are reproduced and found to be determined by the
self-field.
Keywords:
Numerical simulation, Field dependence, Critical current density, Thin films
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.physc.2010.01.048
Electronic version of the publication:
http://publik.tuwien.ac.at/files/PubDat_192028.pdf
Created from the Publication Database of the Vienna University of Technology.