Dynamic Transitions within the Vortex Solid of YBa₂Cu₃O_y Single Crystals

Author： Rassau A.P. Gordeev S.N. de Groot P.A.J. Gagnon R. Taillefer L.

ISSN： 0022-2291

Source： Journal of Low Temperature Physics, Vol.117, Iss.5-6, 1999-12, pp. : 1507-1511

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Abstract

Transport measurements on YBa₂Cu₃O_y have revealed strong history dependences in pinning properties of the vortex solid. By using an annealing current to control exposure of the vortex system to the disorder potential, we were able to study the development of such hysteretic responses, across the region of the vortex freezing transition. We have explained the observed behaviour in terms of coexistent vortex liquid and solid phases.

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