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flatspin: A Large-Scale Artificial Spin Ice Simulator

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 نشر من قبل Johannes H. Jensen
 تاريخ النشر 2020
  مجال البحث فيزياء
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We present flatspin, a novel simulator for systems of interacting mesoscopic spins on a lattice, also known as artificial spin ice (ASI). Our magnetic switching criteria enables ASI dynamics to be captured in a dipole model. Through GPU acceleration, flatspin can simulate realistic dynamics of millions of magnets within practical time frames. We demonstrate flatspins versatility through the reproduction of a diverse set of established experimental results from the literature. In particular, magnetization details of pinwheel ASI during field-driven reversal have been reproduced, for the first time, by a dipole model. The simulation framework enables quick exploration and investigation of new ASI geometries and properties at unprecedented speeds.



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