Wide-field quantitative magnetic imaging of superconducting vortices using perfectly aligned quantum sensors

Various techniques have been applied to visualize superconducting vortices, providing clues to their electromagnetic response. Here, we present a wide-field, quantitative imaging of the stray field of the vortices in a superconducting thin film using perfectly aligned diamond quantum sensors. Our an...

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Veröffentlicht in:Applied physics letters 2023-09, Vol.123 (11)
Hauptverfasser: Nishimura, Shunsuke, Kobayashi, Taku, Sasaki, Daichi, Tsuji, Takeyuki, Iwasaki, Takayuki, Hatano, Mutsuko, Sasaki, Kento, Kobayashi, Kensuke
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Sprache:eng
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Zusammenfassung:Various techniques have been applied to visualize superconducting vortices, providing clues to their electromagnetic response. Here, we present a wide-field, quantitative imaging of the stray field of the vortices in a superconducting thin film using perfectly aligned diamond quantum sensors. Our analysis, which mitigates the influence of the sensor inhomogeneities, visualizes the magnetic flux of single vortices in YBa2Cu3O7−δ with an accuracy of ±10%. The obtained vortex shape is consistent with the theoretical model, and penetration depth and its temperature dependence agree with previous studies, proving our technique's accuracy and broad applicability. This wide-field imaging, which in principle works even under extreme conditions, allows the characterization of various superconductors.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0169521