An implementation of a lattice-based approach for computing the topological skyrmion charge is provided for the open source micromagnetics code mumax3 . Its accuracy with respect to an existing method based on finite difference derivatives is compared for three different test cases. The lattice-based approach is found to be more robust for finite-temperature dynamics and for nucleation and annihilation processes in extended systems.

中文翻译：

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使用基于晶格的方法量化微磁中的拓扑电荷

为开源微磁代码mumax3提供了一种基于格的方法的实现，用于计算拓扑天空离子电荷。对于三个不同的测试案例，比较了其相对于基于有限差分导数的现有方法的准确性。发现基于晶格的方法对于扩展系统中的有限温度动力学以及成核和an灭过程更为健壮。