Studying Critical Parameters of Superconductor via Diamond Quantum Sensors

Abstract

Critical parameters are the key to superconductivity research, and reliable instrumentations can facilitate the study. Traditionally, one has to use several different measurement techniques to measure critical parameters separately. In this work, we develop the use of a single species of quantum sensor to determine and estimate several critical parameters with the help of independent simulation data. We utilize the nitrogen-vacancy (NV) center in the diamond, which recently emerged as a promising candidate for probing exotic features in condensed matter physics. The non-invasive and highly stable nature provides extraordinary opportunities to solve scientific problems in various systems. Using a high-quality single-crystalline YBa${}_2$Cu${}_4$O${}_8$ (YBCO) as a platform, we demonstrate the use of diamond particles and a bulk diamond to probe the Meissner effect. The evolution of the vector magnetic field, the $H-T$ phase diagram, and the map of fluorescence contour are studied via NV sensing. Our results reveal different critical parameters, including lower critical field $H_{c1}$, upper critical field $H_{c2}$, and critical current density $j_c$, as well as verifying the unconventional nature of this high-temperature superconductor YBCO. Therefore, NV-based quantum sensing techniques have huge potential in condensed matter research.

References in corpus (12)

• Mechanics of Individual, Isolated Vortices in a Cuprate Superconductor
• Measuring the defect structure orientation of a single NV- centre in diamond
• Observation of Superconductivity Induced Ferromagnetism in an Fe-Chalcogenide Superconductor
• Optically detected magnetic resonance of nitrogen vacancies in a diamond anvil cell using designer diamond anvils
• Probing local pressure environment in anvil cells with nitrogen vacancy (NV-) centers in diamond
• Scanning nitrogen-vacancy magnetometry down to 350mK
• 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
• Spectroscopy Study on NV Sensors in Diamond-based High-pressure Devices
• In-Situ Studies of Stress Environment in Amorphous Solids Using Negatively Charged Nitrogen Vacancy Centers in Nanodiamond
• Oxygen isotope effect on the superfluid density within the $d-$wave and $s-$wave pairing channels of YBa${}_2$Cu${}_4$O${}_8$
• Determination of the critical current density in the d-wave superconductor YBCO under applied magnetic fields by nodal tunneling

Cited by in corpus (2)

• Imaging the Meissner Effect and Flux Trapping of Superconductors under High Pressure using N-V Centers
• Widefield NV Magnetic Field Reconstruction for Probing the Meissner Effect and Critical Current Density under Pressure