Vortex sub-lattice melting in a two-component superconductor

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dc.creatorSmorgrav, Eivind
dc.creatorSmiseth, Jo
dc.creatorBabaev, Egor
dc.creatorSudbo, Asle
dc.date2004-11-01
dc.date2005-02-04
dc.date.accessioned2026-07-07T03:01:49Z
dc.date.available2026-07-07T03:01:49Z
dc.descriptionWe consider the vortex matter in a three-dimensional two-component superconductor with individually conserved condensates with different bare phase stiffnesses in a finite magnetic field, such as the projected superconducting state of liquid metallic hydrogen. The ground state is an Abrikosov lattice of {\it composite}, i.e. co-centered, vortices in both order parameters. We investigate quantitatively two novel phase transitions when temperature is increased at fixed magnetic field. {\it i)} A ``vortex sub-lattice melting" phase transition where vortices in the field with lowest phase stiffness ("light vortices") loose co-centricity with the vortices with large phase stiffness ("heavy vortices"), thus entering a liquid state. Remarkably, the structure factor of the light vortex sub-lattice vanishes {\it continuously}. This novel transition, which has no counterpart in one-component superconductors, is shown to be in the \xy universality class. Across this transition, the lattice of heavy vortices {\it remains intact}.
dc.description4 pages, 3 figures. Figure 3 updated. References added. To be published in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0411031
dc.identifierhttp://arxiv.org/abs/cond-mat/0411031
dc.identifierPhys.Rev.Lett. 94 (2005) 096401
dc.identifierdoi:10.1103/PhysRevLett.94.096401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25188
dc.subjectSuperconductivity
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleVortex sub-lattice melting in a two-component superconductor
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