Flux-line shear through narrow constraints in superconducting films

A. Pruymboom; P. H. Kes; E. van der Drift; S. Radelaar

doi:10.1103/PhysRevLett.60.1430

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Flux-line shear through narrow constraints in superconducting films

A. Pruymboom, P. H. Kes, E. van der Drift, S. Radelaar

DOI 10.1103/PhysRevLett.60.1430 · Physical Review Letters

T1

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Abstract

Flux-line-lattice flow has been studied in a novel superconducting device containing straight, nanometer-scale, weak-pinning channels in a strong-pinning environment. The shear strength of a two-dimensional, triangular lattice has been directly probed on length scales of order of the lattice parameter by variation of the magnetic field. Good agreement is found with a continuum-approximation model for shear flow. Unusual oscillations in shear strength and history effects were observed and explained by the (in)commensurability between flux-line lattice and channel.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	12.7	Pressure not reported	unknown
Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.9	Pressure not reported	unknown