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{Advanced magneto-optical Kerr effect measurements of superconductors at low temperatures}

2017

Article

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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

Department(s): Modern Magnetic Systems
Bibtex Type: Article (article)

DOI: 10.1063/1.4985044
Language: eng

BibTex

@article{escidoc:0032,
  title = {{Advanced magneto-optical Kerr effect measurements of superconductors at low temperatures}},
  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.},
  journal = {{AIP Advances}},
  volume = {7},
  number = {10},
  year = {2017}
}