Magnetic-field penetration and structure of the mixed state in a superconductor with a multicomponent order parameter
A. S. Zeltser, Yu. G. Pashkevich, A. E. Filippov
DOI 10.1103/PhysRevB.62.9688 · Physical Review B
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Abstract
Magnetic-field penetration in superconductors with a multicomponent order parameter is discussed. Numerical simulation of the process is performed for a wide range of the external magnetic field and internal parameters of the system. It is found that the kinetic process of the vortex penetration regularly produces domain boundaries separating phases with different realizations of the equilibrium order parameter. As a result a new (mixed) vortex state can appear. It contains two different types of vortices connected to pairs and chains by the surface domain energy. The lattice formed by such vortices has a symmetry lower than hexagonal or tetragonal ones.
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