论文标题
富勒烯对固定磁化的pt/co/c60/pt系统的域大小和放松的影响
Effect of Fullerene on domain size and relaxation in a perpendicularly magnetized Pt/Co/C60/Pt system
论文作者
论文摘要
Buckminsterfullerene（C60）可以在界面（称为尖头）表现出Ferromagnetism（称为尖端），将其放在旁边的Ferromagnet（FM）旁边。由于轨道杂交和界面上的自旋极化电荷转移而发生的这种尖头形成。尖头可以影响有机/铁磁异质结构的域大小和动力学。在这里，我们进行了磁性域成像，并研究了具有垂直环形的PT/CO/C60/PT系统中的弛豫动力学。我们已经将结果与其父pt/co/pt系统进行了比较。据观察，PT/CO/PT系统中C60的存在会增加各向异性和气泡域大小的减小。此外，PT/CO/C60/PT系统的切换时间几乎是PT/CO/PT系统的两倍。我们还进行了自旋极化密度功能理论（DFT）计算，以了解机理下方。 DFT结果表明形成了自旋极化跨度，从而导致各向异性的增强。
Buckminsterfullerene (C60) can exhibit ferromagnetism at the interface (called as a spinterface) when it is placed next to a ferromagnet (FM). Formation of such spinterface happens due to orbital hybridization and spin polarized charge transfer at the interface. The spinterface can influence the domain size and dynamics of the organic/ferromagnetic heterostructure. Here, we have performed magnetic domain imaging and studied the relaxation dynamics in Pt/Co/C60/Pt system with perpendicular anisotropy. We have compared the results with its parent Pt/Co/Pt system. It is observed that presence of C60 in the Pt/Co/Pt system increases the anisotropy and a decrease in the bubble domain size. Further the switching time of Pt/Co/C60/Pt system is almost two times faster than Pt/Co/Pt system. We have also performed the spin polarized density functional theory (DFT) calculations to understand the underneath mechanism. DFT results show formation of a spin polarized spinterface which leads to an enhancement in anisotropy.
