Evidence of rf-driven branching of dendritic vortex avalanches in MgB2 microwave resonators

Abstract

The influence of dendritic magnetic-flux penetration on the microwave response of superconducting MgB2 films is investigated by a coplanar resonator technique. The peculiar feature consists of jumps in the resonance curve, induced by vortex avalanches freezing flux inside the resonator. Due to a shaking effect, microwave currents maintain the vortex system close to a nonequilibrium state, resulting in dendrite branching. Avalanche-size distributions before and after flux-pinning tailoring by heavy-ion irradiation are fully consistent with molecular dynamics simulations reported in literature.

arXiv comment15 pages, 6 figures

References in corpus (22)

• Nonlinear Meissner Effect in CuO Superconductors
• Measurement of Resonant Frequency and Quality Factor of Microwave Resonators: Comparison of Methods
• Experiments in vortex avalanches
• Dendritic magnetic instability in superconducting MgB2 films
• Dendritic and uniform flux jumps in superconducting films
• Dendritic flux avalanches and nonlocal electrodynamics in thin superconducting films
• Onset of dendritic flux avalanches in superconducting films
• Superconducting vortex avalanches, voltage bursts, and vortex plastic flow: Effect of the microscopic pinning landscape on the macroscopic properties
• Anisotropies of the lower and upper critical fields in MgB${}_2$ single crystals
• Vortex avalanches and self organized criticality in superconducting niobium
• Dramatic role of critical current anisotropy on flux avalanches in MgB2 films
• Evidences of vortex curvature and anisotropic pinning in superconducting films by quantitative magneto-optics
• Current-induced dendritic magnetic instability in superconducting MgB2 films
• Local threshold field for dendritic instability in superconducting MgB2 films
• Internal avalanches in a pile of superconducting vortices
• The Dendritic magnetic avalanches in carbon-free MgB${}_2$ thin films with and without a deposited Au layer
• Size of flux jumps in superconducting films
• Effective gap at microwave frequencies in MgB2 thin films with strong interband scattering
• On ultrafast magnetic flux dendrite propagation into thin superconducting films
• Reversible magnetization measurement of the anisotropy of the London penetration depth in MgB2 single crystals
• Vortex microavalanches in superconducting Pb thin films
• Intrinsic nonlinearity probed by intermodulation distortion microwave measurements on high quality MgB2 thin films

Cited by in corpus (9)

• Microwave response of vortices in superconducting thin films of Re and Al
• Superconducting granular aluminum resonators resilient to magnetic fields up to 1 Tesla
• Reducing vortex losses in superconducting microwave resonators with microsphere patterned antidot arrays
• Nucleation and propagation of thermomagnetic avalanches in thin-film superconductors
• Thermally driven inhibition of superconducting vortex avalanches
• Catastrophic magnetic flux avalanches in NbTiN superconducting resonators
• Impact of border defects on the magnetic flux penetration in superconducting films
• Fast Dynamics of Vortices in Superconductors
• Active control of thermomagnetic avalanches in superconducting Nb films with tunable anisotropy