Novel dynamics and critical currents in fast superconducting vortices at high pulsed magnetic fields

Abstract

Non-linear electrical transport studies at high-pulsed magnetic fields, above the range accessible by DC magnets, are of direct fundamental relevance to the physics of superconductors, domain-wall, charge-density waves, and topological semi-metal. All-superconducting very-high field magnets also make it technologically relevant to study vortex matter in this regime. However, pulsed magnetic fields reaching 100 T in milliseconds impose technical and fundamental challenges that have prevented the realization of these studies. Here, we present a technique for sub-microsecond, smart, current-voltage measurements, which enables determining the superconducting critical current in pulsed magnetic fields, beyond the reach of any DC magnet. We demonstrate the excellent agreement of this technique with low DC field measurements on Y${}_{0.77}$Gd${}_{0.23}$Ba${}_2$Cu${}_3$O${}_7$ coated conductors with and without BaHfO${}_3$ nanoparticles. Exploring the uncharted high magnetic field region, we discover a characteristic influence of the magnetic field rate of change ($dH/dt$) on the current-voltage curves in a superconductor. We fully capture this unexplored vortex physics through a theoretical model based on the asymmetry of the vortex velocity profile produced by the applied current.

arXiv comment9 pages, 7 figures

References in corpus (12)

• Evidence for superconductivity above 260 K in lanthanum superhydride at megabar pressures
• ARC: A compact, high-field, fusion nuclear science facility and demonstration power plant with demountable magnets
• Three-Dimensional Charge Density Wave Order in YBa2Cu3O6.67 at High Magnetic Fields
• Angular dependent vortex pinning mechanisms in YBCO coated conductors and thin films
• Imaging of super-fast dynamics and flow instabilities of superconducting vortices
• 35.4 T field generated using a layer-wound superconducting coil made of (RE)Ba2Cu3O7-x (RE = Rare Earth) coated conductor
• High magnetic fields for fundamental physics
• Quantum limit transport and destruction of the Weyl nodes in TaAs
• Generation of flat-top pulsed magnetic fields with feedback control approach
• A table-top, repetitive pulsed magnet for nonlinear and ultrafast spectroscopy in high magnetic fields up to 30 T
• Fulde-Ferrell-Larkin-Ovchinnikov States in Two-Band Superconductors
• Novel Vortex Solid State in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Twinned Crystals

Cited by in corpus (3)

• Low frequency imaginary impedance at the superconducting transition of 2H-NbSe${}_2$
• Low-field all-optical detection of superconductivity using NV nanodiamonds
• Re-entrant unconventional superconductivity induced by rare-earth substitution in Nd1-xEuxNiO2 thin films