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Vortex matter and generalizations of dipolar superfluidity concept in layered systems

Egor Babaev
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Abstract

In the first part of this letter we discuss electrodynamics of an excitonic condensate in a bilayer. We show that under certain conditions the system has a dominant energy scale and is described by the effective electrodynamics with "planar magnetic charges". In the second part of the paper we point out that a vortex liquid state in bilayer superconductors also possesses dipolar superfluid modes and establish equivalence mapping between this state and a dipolar excitonic condensate. We point out that a vortex liquid state in an N-layer superconductor possesses multiple topologically coupled dipolar superfluid modes and therefore represents a generalization of the dipolar superfluidity concept.

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Egor Babaev. 2007-10-28. Vortex matter and generalizations of dipolar superfluidity concept in layered systems. https://doi.org/10.1103/physrevb.77.054512

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