Microwave Vortex Motion Characterization of NbSn Coatings for Applications in High Magnetic Fields
arXiv:2603.19027 · doi:10.1109/TASC.2026.3660608
Abstract
In this work, microwave measurements carried out in dielectric-loaded resonators exposed to high magnetic fields are exploited to yield the surface impedance of NbSn superconducting coatings deposited via two different techniques: vapor tin diffusion, and DC magnetron sputtering. The obtained data lead to qualitative interpretations on both the NbSn superconducting properties, and vortex-dynamics and pinning, of each coating separately, as well as simple distinctive features when comparing those. When examining the respective surface impedances at varying field, it is expected that the studied films perform at substantially diverse magnitudes of flux-flow resistivity, but also in well-differentiated pinning regimes, yet the obtained surface resistances of both samples are comparable, thus demonstrating that there is room for film optimization at the expense of certain compromise between the parameters involved.
References in corpus (12)
- Quantum sensing
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- Invisible Axion Search Methods
- A Review of the Properties of Nb3Sn and Their Variation with A15 Composition, Morphology and Strain State
- Searching for Dark Matter with a Superconducting Qubit
- Galactic axions search with a superconducting resonant cavity
- Reliable determination of vortex parameters from measurements of the microwave complex resistivity
- Advances in Nb3Sn superconducting radiofrequency cavities towards first practical accelerator applications
- Grain-boundary structure and segregation in Nb3Sn coatings on Nb for high-performance superconducting radiofrequency cavity applications
- Microwave measurements of the high magnetic field vortex motion pinning parameters in NbSn
- A method based on a dual frequency resonator to estimate physical parameters of superconductors from surface impedance measurements in a magnetic field
- Impact of the superconductors properties on the measurement sensitivity of resonant-based axion detectors