Magnetic field sensing with the kinetic inductance of a high-$T_{\mathrm{c}}$ superconductor

Abstract

We carry out an experimental feasibility study of a magnetic field sensor based on the kinetic inductance of the high-$T_{\mathrm{c}}$ superconductor yttrium barium copper oxide. We pattern thin superconducting films into radio-frequency resonators that feature a magnetic field pick-up loop. At 77 K and for film thicknesses down to 75 nm, we observe the persistence of screening currents that modulate the loop kinetic inductance. According to the experimental results the device concept appears attractive for sensing applications in ambient magnetic field environments. We report on a device with a magnetic field sensitivity of 4 pT/Hz${}^{1/2}$, an instantaneous dynamic range of 11 $\mu$T, and operability in magnetic fields up to 28 $\mu$T.

arXiv comment12 pages, 12 figures

References in corpus (9)

• Planar Superconducting Resonators with Internal Quality Factors above One Million
• Low Loss Superconducting Titanium Nitride Coplanar Waveguide Resonators
• Frequency-tunable Superconducting Resonators via Nonlinear Kinetic Inductance
• Multiplexed Readout for 1000-pixel Arrays of Microwave Kinetic Inductance Detectors
• Kinetic Inductance Magnetometer
• YBCO microwave resonators for strong collective coupling with spin ensembles
• Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout
• Accurate Measurements of the Intrinsic Surface Impedance of Thin YBCO Films Using a Modified Two-tone Resonator Method
• SKIFFS: Superconducting Kinetic Inductance Field-Frequency Sensors for Sensitive Magnetometry in Moderate Background Magnetic Fields