Diamond Magnetometry of Meissner Currents in a Superconducting Film

Nir Alfasi; Sergei Masis; Oleg Shtempeluk; Valleri Kochetok; Eyal Buks

doi:10.1063/1.4959225

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arXiv · 1601.07718

Diamond Magnetometry of Meissner Currents in a Superconducting Film

Nir Alfasi·Sergei Masis·Oleg Shtempeluk·Valleri Kochetok·Eyal Buks

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Abstract

We study magnetic field penetration into a thin film made of a superconducting niobium. Imaging of magnetic field is performed by optically detecting magnetic resonances of negatively charged nitrogen-vacancy defects inside a single crystal diamond, which is attached to the niobium film under study. The experimental results are compared with theoretical predictions based on the critical state model, and good agreement is obtained.

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Nir Alfasi, Sergei Masis, Oleg Shtempeluk, Valleri Kochetok, Eyal Buks. 2016-06-04. Diamond Magnetometry of Meissner Currents in a Superconducting Film. https://doi.org/10.1063/1.4959225

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