Vortex Dynamics and Dissipation Under High-amplitude Microwave Drive

Abstract

In this paper, we describe the vortex dynamics under high-amplitude microwave drive and its effect on the surface resistance of superconductors. The vortex surface resistance is calculated with a Montecarlo approach, where the vortex motion equation is solved for a collection of vortex flux lines each oscillating within a random pinning landscape. This approach is capable of providing a detailed description of the microscopic vortex dynamics and in turn important insights into the microwave field amplitude dependence of the vortex surface resistance. The numerical simulations are compared against experimental data of vortex surface resistance at high microwave amplitude measured by means of bulk niobium superconducting-radio frequency cavities operating at 1.3 GHz. The good qualitative agreement of simulations and experiments suggests that the non-linear dependence of the trapped flux surface resistance with the microwave field amplitude is generated by progressive microwave depinning and vortex jumps.

References in corpus (29)

• The Flux-Line Lattice in Superconductors
• The Superconducting TESLA Cavities
• Nitrogen and argon doping of niobium for superconducting radio frequency cavities: a pathway to highly efficient accelerating structures
• Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
• Three-dimensional superconducting resonators at $T<20$ mK with the photon lifetime up to $\tau =2$ seconds
• Microwave Surface-Impedance Measurements of the Magnetic Penetration Depth in Single Crystal Ba1-xKxFe2As2 Superconductors: Evidence for a Disorder-Dependent Superfluid Density
• Ultra-high quality factors in superconducting niobium cavities in ambient magnetic fields up to 190 mG
• Understanding Quality Factor Degradation in Superconducting Niobium Cavities at Low Microwave Field Amplitudes
• Probing dynamics and pinning of single vortices in superconductors at nanometer scales
• Dependence of the residual surface resistance of superconducting RF cavities on the cooling dynamics around $T_{\mathrm{c}}$
• Efficient expulsion of magnetic flux in superconducting RF cavities for high $Q_0$ applications
• Effect of vortex hotspots on the radio-frequency surface resistance of superconductors
• Proximity breakdown of hydrides in superconducting niobium cavities
• Field-dependent nonlinear surface resistance and its optimization by surface nano-structuring in superconductors
• Microwave response of thin niobium films under perpendicular static magnetic fields
• Quasiparticle scattering time in superconducting films: from dirty to clean limit
• Sensitivity of Niobium Superconducting Cavities to Trapped Magnetic Flux Dissipation
• Observation of non-exponential magnetic penetration profiles in the Meissner state - A manifestation of non-local effects in superconductors
• Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
• Strong Meissner screening change in superconducting radio frequency cavities due to mild baking
• Vortex dynamics and losses due to pinning: Dissipation from trapped magnetic flux in resonant superconducting radio-frequency cavities
• Collapse of the critical state in superconducting niobium
• Evidence of a new low field cross-over in the vortex critical velocity of type-II superconducting thin films
• Microwave Surface Impedance Measurements of the Electronic State and Dissipation of Magnetic Vortices in Superconducting Iron-Based LiFeAs Single Crystals
• Flux pinning characteristics in cylindrical ingot niobium used in superconducting radio frequency cavity fabrication
• Pinning effects on flux flow instability in epitaxial Nb thin films
• Frequency dependence of trapped flux sensitivity in SRF cavities
• Surface impedance measurements on Nb${}_3$Sn at high magnetic fields
• Simple model for the RF field amplitude dependence of the trapped flux sensitivity in superconducting RF cavities

Cited by in corpus (4)

• Tuning microwave losses in superconducting resonators
• Effect of random pinning on nonlinear dynamics and dissipation of a vortex driven by a strong microwave current
• Impact of geometry on the magnetic flux trapping of superconducting accelerating cavities
• Reversible ordering and disordering of the vortex lattice in UPt3