Magnetic flux structure and formfactor of SANS in a superconductor with multicomponent order parameter

Possible observable consequences of a recently described scenario of vortex generation in superconductors with multicomponent order parameter are disc ussed. According to this scenario the vortices appear inside domain boundar ies separating the phases with different realizations of the equilibrium or der parameter. It is shown that, as a rule, solitary vortex has an anisotro pic distribution of the current and magnetic field even in absence of aniso tropy in gradient terms. The lattice formed by such vortices has symmetry l ower than hexagonal or tetragonal ones. It is simulated with the help of br ownian dynamics. Ordered structure manifests itself in the correlation func tion for magnetic field density and, as a result, in the positions, intensi ty and formfactor of the peaks of small angle neutron scattering (SANS). (C ) 1999 Published by Elsevier Science B.V. All rights reserved.