Collapse of the critical state in superconducting niobium

Abstract

Giant abrupt changes in the magnetic flux distribution in niobium foils were studied by using magneto-optical visualization, thermal and magnetic measurements. Uniform flux jumps and sometimes almost total catastrophic collapse of the critical state are reported. Results are discussed in terms of thermomagnetic instability mechanism with different development scenarios.

arXiv.org produced artifacts in color images (three versions were attempts to make better images). Download clean PDF and watch video-figures at: "http://cmp.ameslab.gov/supermaglab/video/Nb.html"

References in corpus (4)

• Dendritic flux avalanches and nonlocal electrodynamics in thin superconducting films
• Finger patterns produced by thermomagnetic instability in superconductors
• Size of flux jumps in superconducting films
• Super-hard Superconductivity

Cited by in corpus (4)

• Quasiparticle spectroscopy, transport, and magnetic properties of Nb films used in superconducting transmon qubits
• Local-moment ferromagnetism and unusual magnetic domains in Fe${}_{1/4}$TaS${}_2$ crystals
• The nontrivial effects of annealing on superconducting properties of Nb single crystals
• Quasiparticle spectroscopy in technologically-relevant niobium using London penetration depth measurements