Fluxoid dynamics in superconducting thin film rings

J. R. Kirtley; C. C. Tsuei; V. G. Kogan; J. R. Clem; H. Raffy; Z. Z. Li

doi:10.1103/PhysRevB.68.214505

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Fluxoid dynamics in superconducting thin film rings

J. R. Kirtley, C. C. Tsuei, V. G. Kogan, J. R. Clem, H. Raffy, Z. Z. Li

DOI 10.1103/PhysRevB.68.214505 · Physical Review B

T1

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Abstract

We have measured the dynamics of individual magnetic fluxoids entering and leaving photolithographically patterned thin film rings of the underdoped high-temperature superconductor Bi2Sr2CaCu2O8+δ, using a variable sample temperature scanning superconducting quantum interference device microscope. These results can be qualitatively described using a model in which the fluxoid number changes by thermally activated nucleation of a Pearl vortex in, and transport of the Pearl vortex across, the ring wall.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	32.5	Pressure not reported	onset
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	36	Pressure not reported	zero_resistance