Published August 12, 2005
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Vortices and Quasiparticles near the Superconductor-Insulator Transition in Thin Films
Chicago
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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 properties of the resulting "vortex metal" phase.
Additional Information
©2005 The American Physical Society (Received 9 May 2005; published 9 August 2005) It is a pleasure to thank A. Auerbach, L. Balents, A. Kapitulnik, S. Kivelson, A.I. Larkin, O. Motrunich, Y. Oreg, and D. Shahar for discussions on this work. This work was generously supported by the David and Lucile Packard foundation (V.G.) and by the National Science Foundation through Grant Nos. PHY99-07949 (V.G., G.R., and M.P.A.F.), DMR-0210790 (M.P.A.F.), and DMR-0308945 (T.S.). T.S. also acknowledges funding from the NEC Corporation, the Alfred P. Sloan Foundation, and The Research Corporation.Files
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