Modern Magnetic Systems
Article
2017
Advanced magneto-optical Kerr effect measurements of superconductors at low temperatures
Magneto-optical Kerr-effect (MOKE) measurements of superconducting films with soft-magnetic coatings are performed at low temperatures using a laser-based MOKE set-up. An elaborate measurement scheme with internal reference allows the quantitative comparison of the temperature dependent Kerr-amplitude with the magnetic field generated by supercurrents. For this purpose, an amorphous CoFeB thin film exhibiting a large Kerr-signal is deposited directly on top of the YBCO superconductor acting as field sensing layer. It is shown that the resulting magnetic hysteresis loops of the soft-magnetic film can be used to reconstruct the electric properties of the superconductor.
| Author(s): | Stahl, C. and Gräfe, J. and Ruoß, S. and Zahn, P. and Bayer, J. and Simmendinger, J. and Schütz, G. and Albrecht, J. |
| Journal: | {AIP Advances} |
| Volume: | 7 |
| Number (issue): | 10 |
| Year: | 2017 |
| BibTeX Type: | Article (article) |
| DOI: | 10.1063/1.4985044 |
| Electronic Archiving: | grant_archive |
| Language: | eng |
BibTeX
@article{escidoc:0032,
title = {{Advanced magneto-optical Kerr effect measurements of superconductors at low temperatures}},
journal = {{AIP Advances}},
abstract = {Magneto-optical Kerr-effect (MOKE) measurements of superconducting films with soft-magnetic coatings are performed at low temperatures using a laser-based MOKE set-up. An elaborate measurement scheme with internal reference allows the quantitative comparison of the temperature dependent Kerr-amplitude with the magnetic field generated by supercurrents. For this purpose, an amorphous CoFeB thin film exhibiting a large Kerr-signal is deposited directly on top of the YBCO superconductor acting as field sensing layer. It is shown that the resulting magnetic hysteresis loops of the soft-magnetic film can be used to reconstruct the electric properties of the superconductor.},
volume = {7},
number = {10},
year = {2017},
author = {Stahl, C. and Gr\"afe, J. and Ruo\ss, S. and Zahn, P. and Bayer, J. and Simmendinger, J. and Sch\"utz, G. and Albrecht, J.},
doi = {10.1063/1.4985044}
}