Hydrodynamic Instability of the Flux-Antiflux Interface in Type-II Superconductors

L. M. Fisher; P. E. Goa; M. Baziljevich; T. H. Johansen; A. L. Rakhmanov; V. A. Yampol'skii

doi:10.1103/PhysRevLett.87.247005

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Hydrodynamic Instability of the Flux-Antiflux Interface in Type-II Superconductors

L. M. Fisher, P. E. Goa, M. Baziljevich, T. H. Johansen, A. L. Rakhmanov, V. A. Yampol'skii

DOI 10.1103/PhysRevLett.87.247005 · Physical Review Letters

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Abstract

A possible mechanism of the macroturbulence instability observed in fluxline systems during remagnetization of superconductors is proposed. It is shown that when a region with flux is invaded by antiflux the interface can become unstable if there is a relative tangential flux motion. This condition occurs at the interface owing to the anisotropy of the viscous motion of vortices. The phenomenon is similar to the instability of the tangential discontinuity in classical hydrodynamics. The obtained results are supported by magneto-optical observations of flux distribution on the surface of a YBCO single crystal with twins.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBCO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown