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arXiv · cond-mat/0405698

Vortex nanoliquid in high-temperature superconductors

S. S. Banerjee·S. Goldberg·A. Soibel·Y. Myasoedov·M. Rappaport·E. Zeldov·F. de la Cruz·C. J. van der Beek·M. Konczykowski·T. Tamegai·V. M. Vinokur
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Abstract

Using a differential magneto-optical technique to visualize flow of transport currents, we reveal a new delocalization line within the reversible vortex liquid region in the presence of a low density of columnar defects. This line separates a homogeneous vortex liquid, in which all the vortices are delocalized, from a heterogeneous "nanoliquid" phase, in which interconnected nanodroplets of vortex liquid are caged in the pores of a solid skeleton formed by vortices pinned on columnar defects. The nanoliquid phase displays high correlation along the columnar defects but no transverse critical current.

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S. S. Banerjee, S. Goldberg, A. Soibel, Y. Myasoedov, M. Rappaport, E. Zeldov, F. de la Cruz, C. J. van der Beek, M. Konczykowski, T. Tamegai, V. M. Vinokur. 2004-05-31. Vortex nanoliquid in high-temperature superconductors. https://doi.org/10.1103/physrevlett.93.097002

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