Nanogallery
Nanogallery
TODAY AUGUST 16, 2018

Superconducting vortices trapped in holes in Nb film

Superconducting vortices (white spots) are imaged by the magnetic decoration technique.
Superconducting vortices (white spots) are imaged by the magnetic decoration technique.
Superconducting vortices (white spots) are imaged by the magnetic decoration technique. All vortices are trapped inside small blind holes etched into a thin Nb film. The size of the holes is less than 10 microns. The vortices can be directly visualized due to the fact that each hole has a layer of Nb at the bottom. The vortices are confined inside the holes due to to the presence of an "edge state", i.e. a strongly enhanced superconductivity localized around the holes.


1. A. Bezryadin and B. Pannetier, Journal of Low Temp. Phys., 102, (1996), p73.
2. A. Bezryadin, Yu.N. Ovchinnikov, and B. Pannetier, Phys. Rev. B 53, 85538560 (1996).
3. A. Bezryadin and B. Pannetier, "Edge superconducting states," Physica Scripta T66, 225229 (1996).
The cylindrical superstructures are composed of silver nanoparticles with V-shaped amphiphilic arms. The short rod-like and spherical assemblies are made of gold nanoparticles with the same V-shaped amphiphilic arms.  The self-assembly occurs upon slow addition of water to solution of nanoparticles in organic solvent called tetrahydrofuran. The resulting mixture is then dialyzed against pure water in order to remove organic solvent and obtain a pure aqueous solution of the superstructures (they remain in water without any precipitation, just like micelles).
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