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Parallel computation of 3D magnetic structures
Intensive experimental and theoretical research for novel materials introduces new architectures for magnetic devices, where shape and topology plays a crucial role . A powerful way to study them as well as confirm analytical predictions is to compute the corresponding equations of motion numerically. Here, we present a spin-lattice simulation suite SLaSi, which can address flexible magnetic one- and two- dimensional spin lattices. They can represent soft wires and ribbons, where the coupling between magnetic and mechanical subsystem results into spontaneous deformations and symmetry breaks . The SLaSi is a C-written program, where exchange, single-ion anisotropy, Zeeman energy, dipolar interaction, and Dzyaloshinskii-Moriya interaction are taken into account for the description cubic, square, and triangular lattices. Dynamics of the mechanical sub-system is modelled by the overdamped Newton equations, while magnetic sub-system is modelled by LLG. Speedup of the computations is achieved by parallelization using MPI and CUDA frameworks.
Keywords: curvilinear magnetism; computations; CUDA; MPI
Curvilinear Condensed Matter: Fundamentals and Applications 717. WE-Heraeus-Seminar, 24.-26.06.2021, Bad Honnef, Germany