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Vortices and quasiparticles near the "superconductor-insulator" transition in thin films

Victor Galitski·G. Refael·Matthew P. A. Fisher·T. Senthil
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Abstract

We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic field (B). For this purpose we introduce a new two-fluid formulation consisting of fermionized field induced vortices and electrically neutralized Bogoliubov quasiparticles (spinons) interacting via a long-ranged statistical interaction. This approach allows us to access a novel non-Fermi liquid phase which naturally interpolates between the low B superconductor and the high B normal metal. We discuss the transport, thermodynamic, and tunneling properties of the resulting "vortex metal" phase.

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Victor Galitski, G. Refael, Matthew P. A. Fisher, T. Senthil. 2005-05-10. Vortices and quasiparticles near the "superconductor-insulator" transition in thin films. https://doi.org/10.1103/physrevlett.95.077002

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