Josephson junctions and AdS/CFT networks.

Theorists at QCN have proposed a novel holographic model of Josephson junctions (and networks thereof) that employs a gravitational description known as designer multi-gravity. An extension of the standard AdS/CFT correspondence in this more general framework has allowed a versatile formulation of a wide range of systems built out of weakly interconnected individual components. A simple model of a Josephson junction was analyzed, and one-dimensional Josephson-junction arrays were exhibited where it was found that the Cooper-pair condensate modulation  across the chain is described by a discretized Schrodinger-type equation. The allowed configurations of such systems were found to exhibit complex behavior that includes periodic and quasi-periodic solutions, chaotic dynamics, soliton and kink solutions.

Outreach Archives

  • Tuesday, 3. February 2015

    In recent a article of QCN researchers in Physical Review B, the mythological beast chimera appears on the title of the paper.

     

  • Tuesday, 10. June 2014

    QCN researchers have performed extensive measurements of the electric polarization on Sr and Li doped La2CuO4 single crystals. It is shown that La1.999Sr0.001CuO4 exhibits distinct ferroelectric behavior along different crystallographic directions.

     

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