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

Claudia Stahl; Joachim Gräfe; Stephen Ruoß; Patrick Zahn; Jonas Bayer; Julian Simmendinger; Gisela Schütz; Joachim Albrecht

doi:10.1063/1.4985044

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

Claudia Stahl, Joachim Gräfe, Stephen Ruoß, Patrick Zahn, Jonas Bayer, Julian Simmendinger, Gisela Schütz, Joachim Albrecht

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

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.

Original language	English
Article number	105019
Journal	AIP Advances
Volume	7
Issue number	10
DOIs	https://doi.org/10.1063/1.4985044
State	Published - 1 Oct 2017
Externally published	Yes

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title = "Advanced magneto-optical Kerr effect measurements of superconductors at low temperatures",

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.",

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AU - Stahl, Claudia

AU - Gräfe, Joachim

AU - Ruoß, Stephen

AU - Zahn, Patrick

AU - Bayer, Jonas

AU - Simmendinger, Julian

AU - Schütz, Gisela

AU - Albrecht, Joachim

PY - 2017/10/1

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N2 - 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.

AB - 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.

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JO - AIP Advances

JF - AIP Advances

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ER -

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

Abstract

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