Self-organization of topological defects for a triangular-lattice magnetic dots array subject to a perpendicular magnetic field

Abstract

The regular array of magnetic particles (magnetic dots) of the form of a two-dimensional triangular lattice in the presence of external magnetic field demonstrates complicated magnetic structures. The magnetic symmetry of the ground state for such a system is lower than that for the underlying lattice. Long range dipole-dipole interaction leads to a specific antiferromagnetic order in small fields, whereas a set of linear topological defects appears with the growth of the magnetic field. Self-organization of such defects determines the magnetization process for a system within a wide range of external magnetic fields.

arXiv comment10 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1201.1747

References in corpus (8)

• Dynamics of a Quantum Phase Transition and Relaxation to a Steady State
• Dipolar interaction between two-dimensional magnetic particles
• Collective modes for an array of magnetic dots in the vortex state
• Dipolar ground state of planar spins on triangular lattices
• Collective modes for an array of magnetic dots with perpendicular magnetization
• Non-reciprocal light scattering by lattice of magnetic vortices
• Nature of phase transition(s) in striped phase of triangular-lattice Ising antiferromagnet
• Vortex ground state for small arrays of magnetic particles with dipole coupling

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