Diamond Magnetometry of Meissner Currents in a Superconducting Film

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.

5 pages, 3 figures

References in corpus (10)

• Nanoscale magnetic imaging of a single electron spin under ambient conditions
• Magnetic field imaging with NV ensembles
• High sensitivity magnetic imaging using an array of spins in diamond
• Nuclear Magnetic Resonance Imaging with 90 nm Resolution
• Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond
• Flux pinning in (1111) iron-pnictide superconducting crystals
• Vortex trapping and expulsion in thin-film YBCO strips
• Local measurement of the superfluid density in the pnictide superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ across the superconducting dome
• Lower Critical Fields of Superconducting PrFeAsO${}_{1-y}$ Single Crystals
• Super-hard Superconductivity

Cited by in corpus (6)

• A Geometric Perspective on Quantum Parameter Estimation
• Neutron Stars in the Laboratory
• Laser modulation of superconductivity in a cryogenic widefield nitrogen-vacancy microscope
• Enhanced concentrations of nitrogen-vacancy centers in diamond through TEM irradiation
• Spatially - resolved study of the Meissner effect in superconductors using NV-centers-in-diamond optical magnetometry
• Real-space probing of the local magnetic response of thin-film superconductors using single spin magnetometry