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Sensors
Volume 18
Issue 11
10.3390/s18113790
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Open AccessLetter

Real-Space Probing of the Local Magnetic Response of Thin-Film Superconductors Using Single Spin Magnetometry

by
Dominik Rohner
1,†,
Lucas Thiel
1,†,
Benedikt Müller
2,
Mark Kasperczyk
1,
Reinhold Kleiner
2,
Dieter Koelle
2 and
Patrick Maletinsky
1,*
1
Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
2
Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Sensors 2018, 18(11), 3790; https://doi.org/10.3390/s18113790
Received: 10 October 2018 / Revised: 31 October 2018 / Accepted: 1 November 2018 / Published: 6 November 2018
(This article belongs to the Special Issue Sensors Based on Quantum Phenomena)
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Abstract

We report on direct, real-space imaging of the stray magnetic field above a micro-scale disc of a thin film of the high-temperature superconductor YBa2Cu3O7−δ (YBCO) using scanning single spin magnetometry. Our experiments yield a direct measurement of the sample’s London penetration depth and allow for a quantitative reconstruction of the supercurrents flowing in the sample as a result of Meissner screening. These results show the potential of scanning single spin magnetometry for studies of the nanoscale magnetic properties of thin-film superconductors, which could be readily extended to elevated temperatures or magnetic fields. View Full-Text
Keywords: london penetration depth; meissner effect; quantum sensing; nitrogen-vacancy center; scanning probe microscopy london penetration depth; meissner effect; quantum sensing; nitrogen-vacancy center; scanning probe microscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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MDPI and ACS Style

Rohner, D.; Thiel, L.; Müller, B.; Kasperczyk, M.; Kleiner, R.; Koelle, D.; Maletinsky, P. Real-Space Probing of the Local Magnetic Response of Thin-Film Superconductors Using Single Spin Magnetometry. Sensors 2018, 18, 3790. https://doi.org/10.3390/s18113790

AMA Style

Rohner D, Thiel L, Müller B, Kasperczyk M, Kleiner R, Koelle D, Maletinsky P. Real-Space Probing of the Local Magnetic Response of Thin-Film Superconductors Using Single Spin Magnetometry. Sensors. 2018; 18(11):3790. https://doi.org/10.3390/s18113790

Chicago/Turabian Style

Rohner, Dominik; Thiel, Lucas; Müller, Benedikt; Kasperczyk, Mark; Kleiner, Reinhold; Koelle, Dieter; Maletinsky, Patrick. 2018. "Real-Space Probing of the Local Magnetic Response of Thin-Film Superconductors Using Single Spin Magnetometry" Sensors 18, no. 11: 3790. https://doi.org/10.3390/s18113790

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