论文标题
超短电磁脉冲诱导的dzyaloshinskii-moriya相互作用：应用于相干（抗）铁磁skyrmion nubleation
Dzyaloshinskii-Moriya interaction induced by an ultrashort electromagnetic pulse: Application to coherent (anti)ferromagnetic skyrmion nucleation
论文作者
论文摘要
我们展示了如何在超短电磁脉冲产生的诱导的内部电场的超薄金属膜中产生dzyaloshinskii-moriya的相互作用。这种相互作用不需要结构反转对称性，并且可以根据场的幅度调节其振幅。我们执行第一原理计算，以估计铁磁Fe，Co和Ni和Ni以及抗磁磁性MN的磁磁电耦合的强度以及抗磁合金。最后，使用原子模拟，我们演示了如何通过在100-FS时尺上的电场中的超短脉冲将分离的抗磁磁性空中矩阵从线的背景中结合成核。
We show how a Dzyaloshinskii-Moriya interaction can be generated in an ultrathin metal film from the induced internal electric field created by an ultrashort electromagnetic pulse. This interaction does not require structural inversion-symmetry breaking, and its amplitude can be tuned depending on the amplitude of the field. We perform first-principles calculations to estimate the strength of the field-induced magnetoelectric coupling for ferromagnetic Fe, Co, and Ni, and antiferromagnetic Mn, as well as FePt alloys. Last, using atomistic simulations, we demonstrate how an isolated antiferromagnetic skyrmion can be coherently nucleated from the collinear background by an ultrashort pulse in electric field on a 100-fs timescale.
