Vortex nanoliquid in high-temperature superconductors

Using a differential magneto-optical technique to visualize the 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...

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Bibliographic Details
Published inPhysical review letters Vol. 93; no. 9; p. 097002
Main Authors Banerjee, S S, Goldberg, S, Soibel, A, Myasoedov, Y, Rappaport, M, Zeldov, E, de la Cruz, F, van der Beek, C J, Konczykowski, M, Tamegai, T, Vinokur, V M
Format Journal Article
LanguageEnglish
Published United States 27.08.2004
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Summary:Using a differential magneto-optical technique to visualize the 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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.93.097002