Anton N. Knigavko

Magnetic skyrmions and their lattices in triplet superconductors

A complete topological classification of solutions in SO(3) symmetric Ginzburg-Landau free energy has been performed and a new class of solutions in weak external magnetic field carrying two units of magnetic flux has been identified. These solutions, magnetic skyrmions, do not have a singular core as Abrikosov vortices do and at low magnetic field they become lighter for strongly type II superconductors. As a consequence, the lower critical magnetic field

Elastic anomalies in HoNi2B2C single crystals

{H}_{c1}

Nature of the 45 degrees vortex lattice reorientation in tetragonal superconductors

is reduced by a factor of

90 degrees reorientation in the vortex lattice of borocarbide superconductors

\mathrm{ln}\ensuremath{\kappa}.

The puzzle of 90 degree reorientation in the vortex lattice of borocarbide superconductors

Magnetic skyrmions repel each other as

Anisotropic peak effect due to structural phase transition in the vortex lattice

1/r

Publisher's Note: Elastic anomalies inHoNi2B2Csingle crystals [Phys. Rev. B70, 220504(R) (2004)]

at distances much larger than magnetic penetration depth

Elastic anomalies in HoNi2 B2 C single crystals

\ensuremath{\lambda}

Expansion in the

forming a relatively robust triangular lattice. Magnetization near

Vortex lattice transformations in tetragonal BCS superconductors due to Fermi surface anisotropy

{H}_{c1}