Vortices and quasiparticles near the ``superconductor-insulator'' transition in thin films.
ORAL
Abstract
We consider the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic field. We introduce a new two-fluid formulation consisting of fermionized field-induced vortices and electrically neutralized Bogoliubov quasiparticles 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 field superconductor and the high field normal metal. We also discuss the transport, thermodynamics, and tunneling properties of the resulting ``vortex metal'' phase.
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Authors
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Victor Galitski
Physics Department, University of Virginia, University of Virginia
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Gil Refael
Caltech
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Matthew P. A. Fisher
KITP, UCSB
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T. Senthil
IISc