Vortex sublattice melting in a two-component superconductor
2005 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 94, no 9Article in journal (Refereed) Published
We consider the vortices in a superconductor with two individually conserved condensates in a finite magnetic field. The ground state is a lattice of cocentered vortices in both order parameters. We find two phase transitions: (i) a vortex sublattice melting transition where vortices in the field with lowest phase stiffness (light vortices) lose cocentricity with the vortices with large phase stiffness (heavy vortices), entering a liquid state (the structure factor of the light vortices vanishes continuously; this transition is in the 3Dxy universality class); (ii) a first-order melting transition of the lattice of heavy vortices, in a liquid of light vortices.
Place, publisher, year, edition, pages
2005. Vol. 94, no 9
liquid metallic hydrogen, ii superconductors, fluctuations
IdentifiersURN: urn:nbn:se:kth:diva-14591DOI: 10.1103/PhysRevLett.94.096401ISI: 000227566000038OAI: oai:DiVA.org:kth-14591DiVA: diva2:332632
QC 201005252010-08-052010-08-05Bibliographically approved