Distorted vortex lattice in a tetrahedral superconductor

Details Distorted vortex lattice in a tetrahedral superconductor Distorted vortex lattice in a tetrahedral superconductor

2006-03-23

arxiv.org/abs/cond-mat/0603623v1

JETP Letters, 2006, Vol. 83, No. 4, pp. 167-171.

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures, to be published in JETP Letters

Scientific paper

10.1134/S0021364006040084

Equilibrium shape and orientation of vortex lattice are studied for an s-wave tetrahedral superconductor in the vicinity of the upper critical field. The phase diagram, which includes transitions between rhombic and rectangular lattices, is constructed in the parameter space of the Ginzburg-Landau functional. The developed theory is applied to the heavy-fermion superconductor PrOs$_4$Sb$_{12}$. In a wide range of parameters the shape of the vortex lattice is only weakly dependent on temperature. The neutron scattering measurements of the vortex lattice in PrOs$_4$Sb$_{12}$ can be explained by a peculiarities of the tetrahedral symmetry group and are further supported by analysis of the appropriate band structure calculations.

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