论文标题
各向异性耦合引起的分数抗铁磁晶格
Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
论文作者
论文摘要
磁性天空是具有纳米级绕组旋转质地的拓扑孤子，对Spintronics应用有望。到目前为止，已经在各种磁铁中观察到了天空，这些磁铁几乎显示出相邻自旋的平行比对，但是从理论上讲，具有反平行相邻旋转的天空是可能的。与传统的铁磁天空敏相比，后者的抗铁磁天空可能可以更灵活地控制。在这里，通过结合中子散射和蒙特卡洛模拟，我们表明，具有初期梅隆特征的分数抗磁磁性晶格在MNSC $ _2 $ _2 $ S $ _4 $中通过各向异性耦合稳定。我们的工作表明，理论上提出的反铁磁天空可以稳定在真实材料中，这代表了实施基于抗铁磁的基于抗铁磁的纺纱型纺纱设备的重要一步。
Magnetic skyrmions are topological solitons with a nanoscale winding spin texture that hold promise for spintronics applications. Until now, skyrmions have been observed in a variety of magnets that exhibit nearly parallel alignment for the neighbouring spins, but theoretically, skyrmions with anti-parallel neighbouring spins are also possible. The latter, antiferromagnetic skyrmions, may allow more flexible control compared to the conventional ferromagnetic skyrmions. Here, by combining neutron scattering and Monte Carlo simulations, we show that a fractional antiferromagnetic skyrmion lattice with an incipient meron character is stabilized in MnSc$_2$S$_4$ through anisotropic couplings. Our work demonstrates that the theoretically proposed antiferromagnetic skyrmions can be stabilized in real materials and represents an important step towards implementing the antiferromagnetic-skyrmion based spintronic devices.
