Vortex matter and generalizations of dipolar superfluidity concept in layered systems

TL;DR

This paper explores the electrodynamics of excitonic condensates and vortex liquids in layered systems, revealing their dipolar superfluid modes and establishing a generalized framework for dipolar superfluidity in multilayer superconductors.

Contribution

It introduces a unified description of dipolar superfluid modes in bilayer and multilayer systems, extending the concept to complex vortex liquid states.

Findings

Effective electrodynamics with planar magnetic charges in bilayer excitonic condensates.

Vortex liquid states in multilayer superconductors possess multiple topologically coupled dipolar superfluid modes.

Generalization of dipolar superfluidity concept to N-layer superconductors.

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.