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Oscillatory dynamics and organization of the vortex solid in YBa2Cu3O7 single crystals

S. O. Valenzuela·V. Bekeris
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Abstract

We report on the degree of order of the vortex solid in YBa2Cu3O7 single crystals observed in ac susceptibility measurements. We show that when vortices are "shaken" by a temporarily symmetric ac field they are driven into an easy-to-move, ordered structure but, on the contrary, when the ac field is temporarily asymmetric, they are driven into a more pinned disordered state. This is characteristic of tearing of the vortex lattice and shows that ordering due to symmetric ac fields is essentially different from an equilibration process or a dynamical crystallization that is expected to occur at high driving currents.

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S. O. Valenzuela, V. Bekeris. 2001-04-18. Oscillatory dynamics and organization of the vortex solid in YBa2Cu3O7 single crystals. https://doi.org/10.1103/physrevlett.86.504

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