Periodic Oscillations of Josephson-Vortex Flow Resistance in Bi2Sr2CaCu2O8+y

S. Ooi; T. Mochiku; K. Hirata

doi:10.1103/PhysRevLett.89.247002

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Periodic Oscillations of Josephson-Vortex Flow Resistance in Bi2Sr2CaCu2O8+y

S. Ooi, T. Mochiku, K. Hirata

DOI 10.1103/PhysRevLett.89.247002 · Physical Review Letters

T1

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Abstract

To study the Josephson-vortex system, we have measured the vortex-flow resistance as a function of magnetic field parallel to the ab plane in Bi2Sr2CaCu2O8+y single crystals. Novel periodic oscillations of the vortex-flow resistance have been observed in a wide range of temperatures and magnetic fields. The period of the oscillations corresponds to the field needed to add “one” vortex quantum per “two” intrinsic Josephson junctions. The flow velocity is related to a matching effect between the lattice spacing of Josephson vortices along the layers and the width of the sample. These results suggest that Josephson vortices form a triangular lattice in the ground state where the oscillations occur.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	86	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	60	Pressure not reported	unknown