Square vortex lattices for two-component superconducting order parameters

Superconducting vortex lattices for ultracold atoms.

We propose and analyze a nanoengineered vortex array in a thin-film type-II superconductor as a magnetic lattice for ultracold atoms. This proposal addresses several of the key questions in the development of atomic quantum simulators. By trapping atoms close to the surface, tools of nanofabrication and structuring of lattices on the scale of few tens of nanometers become available with a corre...

Magnetic response of mesoscopic superconducting rings with two order parameters.

The magnetic response and fluxoid transitions of superconducting aluminum rings of various sizes, deposited under conditions likely to generate a layered structure, show good agreement with a two-order-parameter Ginzburg-Landau model. For intermediate couplings, we find metastable states that have different phase winding numbers around the ring in each of the two order parameters. Those states,...

Vortex - antivortex configurations and their stability in mesoscopic superconducting square

Vortex-antivortex configurations and their stability in mesoscopic superconducting square. Abstract We solve the Ginzburg-Landau equation (GLE) for the mesoscopic super-conducting thin film of the square shape in the magnetic field for the wide range of the Ginzburg-Landau parameter 0.05 < κ ef f < ∞. We focus on the region of the field where formation of the antivortex has been reported previo...

Ferromagnetic and antiferromagnetic order in bacterial vortex lattices

Despite their inherent non-equilibrium nature1, living systems can self-organize in highly ordered collective states2,3 that share striking similarities with the thermodynamic equilibrium phases4,5 of conventional condensed matter and fluid systems. Examples range from the liquid-crystal-like arrangements of bacterial colonies6,7, microbial suspensions8,9 and tissues10 to the coherent macro-sca...

Order-disorder Coexistence and Limit of Metastability in Vortex Lattices