Real-space probing of the local magnetic response of thin-film superconductors using single spin magnetometry

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 YBa${}_2$Cu${}_3$O${}_{7-\delta }$ (YBCO) using scanning single spin magnetometry. Our experiments yield a direct measurement of the sample's local 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.

arXiv comment6 pages, 4 figures

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Cited by in corpus (12)

• Josephson junctions and SQUIDs created by focused helium ion beam irradiation of YBa${}_2$Cu${}_3$O${}_7$
• Laser modulation of superconductivity in a cryogenic widefield nitrogen-vacancy microscope
• Observation of Superconductivity Induced Ferromagnetism in an Fe-Chalcogenide Superconductor
• Measurements of the lower critical field of superconductors using NV centers in diamond optical magnetometry
• Visualizing bulk and edge photocurrent flow in anisotropic Weyl semimetals
• Ultradense Tailored Vortex Pinning Arrays in Superconducting YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Thin Films Created by Focused He Ion Beam Irradiation for Fluxonics Applications
• (111)-oriented, single crystal diamond tips for nanoscale scanning probe imaging of out-of-plane magnetic fields
• Spin dynamics of a solid-state qubit in proximity to a superconductor
• All-Optical and Microwave-Free Detection of Meissner Screening using Nitrogen-Vacancy Centers in Diamond
• Vortex matching at 6 T in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ thin films by imprinting a 20 nm-periodic pinning array with a focused helium ion beam
• Studying Critical Parameters of Superconductor via Diamond Quantum Sensors
• Widefield NV Magnetic Field Reconstruction for Probing the Meissner Effect and Critical Current Density under Pressure