Vortex state in double transition superconductors

Details Vortex state in double transition superconductors Vortex state in double transition superconductors

2004-02-19

arxiv.org/abs/cond-mat/0402486v1

Phys. Rev. Lett. 92, 157001 (2004)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.92.157001

Novel vortex phase and nature of double transition field are investigated by two-component Ginzburg-Landau theory in a situation where fourfold-twofold symmetric superconducting double transition occurs. The deformation from 60 degree triangular vortex lattice and a possibility of the vortex sheet structure are discussed. In the presence of the gradient coupling, the transition changes to a crossover at finite fields. These characters are important to identify the multiple superconducting phase in PrOs_4_Sb_12.

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