Islands of (In-)stability in High Temperature Superconductors

Velocity measurements of the dendritic instability in Y Ni2B2C

“…We split the beam in two parts; one is used to perturb the current distribution by locally heating the superconductor. Under appropriate conditions [8] this will trigger the instability. The second part of the pulse is fed into a delay line which has been adjusted for time delays between 1 and 6.5 ns.…”