High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice
High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice
In a network of ferromagnetic nanowires, a magnetic metamaterial known as $a\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}f\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}l$ $s\phantom{\rule{0}{0ex}}p\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}n$ $i\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}e$, the collective magnetization behavior strongly affects the dynamics and the magnetoresistive behavior. The authors use micromagnetic simulations to provide a microscopic picture of this unexpected response, and find that the sharp features in their experimental data …