Hidden vortex lattices in a thermally paired superfluid

We study the evolution of rotational response of a statistical mechanical model of two-component superfluid with a nondissipative drag interaction as the system undergoes a transition into a paired superfluid phase at finite temperature. The transition manifests itself in a change of (i) vortex-latt...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2008-10, Vol.78 (14), Article 144510
Main Authors: Dahl, E. K., Babaev, E., Sudbø, A.
Format: Article
Language:English
Subjects:
BOSE-EINSTEIN CONDENSATION
BREAKDOWN
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL LATTICES
EVOLUTION
flux
INTERACTIONS
MIXED STATE
STATISTICAL MECHANICS
STATISTICAL MODELS
superconductor
SUPERFLUIDITY
SYMMETRY
transition
VORTICES
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Summary:We study the evolution of rotational response of a statistical mechanical model of two-component superfluid with a nondissipative drag interaction as the system undergoes a transition into a paired superfluid phase at finite temperature. The transition manifests itself in a change of (i) vortex-lattice symmetry and (ii) nature of the vortex state. Instead of a vortex lattice, the system forms a highly disordered tangle which constantly undergoes merger and reconnecting processes involving different types of vortices with a 'hidden' breakdown of translation symmetry.
ISSN:1098-0121
1550-235X
1550-235X
DOI:10.1103/PhysRevB.78.144510