论文标题
检测四极：锰合金的隐藏磁各向异性来源
Detecting quadrupole: a hidden source of magnetic anisotropy for Manganese alloys
论文作者
论文摘要
基于MN的合金在具有垂直磁各向异性（PMA）的旋转材料中具有独特的特性，超出了Fe和Co基于合金。希望找出从未有过报道的基于MN的合金固有的PMA的量子物理学。在此，研究了使用X射线磁性圆形和线性二分法（XMCD/XMLD）和第一原则计算，研究了Ferrimagnetic Mn $ _ {3-δ} $ ga的订购合金的起源以解决反平行偶联的MN位点。我们发现，XMCD中轨道磁矩在PMA中的贡献很小，并且有限的四极样轨道变形通过旋转的电子跳跃是XMLD和理论计算的主导性。这些发现表明，旋转的轨道四极杆的地层起源于Mn $ _ {3-δ} $ ga中的PMA，并使用X射线磁性光谱进行了PMA材料的研究中的范式转移。
Mn-based alloys exhibit unique properties in the spintronics materials possessing perpendicular magnetic anisotropy (PMA) beyond the Fe and Co-based alloys. It is desired to figure out the quantum physics of PMA inherent to Mn-based alloys, which have never been reported. Here, the origin of PMA in ferrimagnetic Mn$_{3-δ}$Ga ordered alloys is investigated to resolve antiparallel-coupled Mn sites using x-ray magnetic circular and linear dichroism (XMCD/XMLD) and a first-principles calculation. We found that the contribution of orbital magnetic moments in PMA is small from XMCD and that the finite quadrupole-like orbital distortion through spin-flipped electron hopping is dominant from XMLD and theoretical calculations. These findings suggest that the spin-flipped orbital quadrupole formations originate from the PMA in Mn$_{3-δ}$Ga and bring the paradigm shift in the researches of PMA materials using x-ray magnetic spectroscopies.
