Microfluidic manipulation of magnetic flux domains in type-I superconductors: droplet formation, fusion and fission.

ABSTRACT: The magnetic flux domains in the intermediate state of type-I superconductors are known to resemble fluid droplets, and their dynamics in applied electric current is often cartooned as a "dripping faucet". Here we show, using the time-depended Ginzburg-Landau simulations, that microfluidic principles hold also for the determination of the size of the magnetic flux-droplet as a function of the applied current, as well as for the merger or splitting of those droplets in the presence of the nanoengineered obstacles for droplet motion. Differently from fluids, the flux-droplets in superconductors are quantized and dissipative objects, and their pinning/depinning, nucleation, and splitting occur in a discretized form, all traceable in the voltage measured across the sample. At larger applied cu

SUBMITTER: Berdiyorov GR 

PROVIDER: S-EPMC5608719 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature