Phase diagram of planar U(1)xU(1) superconductors: condensation of vortices with fractional flux and a superfluid state
Egor Babaev
Abstract
We discuss a phase diagram of two-dimentional U(1)× U(1) superconductor in the field theoretic formalizm of Ref. [17]. In particular we discuss that in the type-I case the system exhibit a quasi-neutral quasi-superfluid state.
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