Vortex nanoliquid in high-temperature superconductors

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.

Paper accepted in Physical Review Letters. 5 pages text with 4 figures

References in corpus (11)

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• Melting of 'porous' vortex matter
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Cited by in corpus (23)

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• Perspective: Challenges and Transformative Opportunities in Superconductor Vortex Physics
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• Phase diagram of the vortex system in layered superconductors with strong columnar pinning
• Mapping giant magnetic fields around dense solid plasmas by high resolution magneto-optical microscopy
• High sensitivity differential Magneto-Optical Imaging with a compact Faradaymodulator
• Suppression of geometrical barrier in $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$ crystals by Josephson vortex stacks
• Structure and dynamics of a pinned vortex liquid in superconducting a-Re_xZr (x ~ 6) thin film
• On the melting of the nanocrystalline vortex matter in high-temperature superconductors
• Scanning microscopies of superconductors at very low temperatures
• Collective pinning of the vortex lattice by columnar defects in layered superconductors
• Langevin Dynamics of the vortex matter two-stage melting transition in Bi_2Sr_2CaCu_2O${}_{8+\delta }$ in the presence of straight and of tilted columnar defects
• Generating strong magnetic flux shielding regions in a single crystal of Bi2Sr2CaCu2O8 using a blind hole array
• Multiple Changes of Order of the Vortex Melting Transition in BSCCO with Dilute Columnar Defects
• Visualizing a dilute vortex liquid to solid phase transition in a Bi2Sr2CaCu2O8 single crystal
• Lamellar mesophase nucleated by Josephson vortices at the melting of the vortex lattice in $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+delta}$
• Vortex phase diagram in BSCCO with damage tracks created by 30 MeV fullerene irradiation
• Non-classical Rotational Inertia in a Two-dimensional Bosonic Solid Containing Grain Boundaries
• The phase diagram of vortex matter in layered superconductors with tilted columnar pinning centers
• Metastable inhomogeneous vortex configuration with non-uniform filling fraction inside a blind hole array patterned in a BSCCO single crystal and concentrating magnetic flux inside it
• Imaging the effect of drive on the low-field vortex melting phenomenon in Ba0.6K0.4Fe2As2 single crystal
• Monte Carlo Simulation of the Crossover from Bose Glass to Bragg Glass Phase in Layered BSCCO with Columnar Defects
• Commensurate - Incommensurate vortex phase in a nanopatterned superconductor