Electric field control of the magnetic anisotropy energy of double-vacancy graphene decorated by iridium atoms
Electric field control of the magnetic anisotropy energy of double-vacancy graphene decorated by iridium atoms
复制标题
铱原子修饰双空位石墨烯磁各向异性能量的电场控制
DOI：
10.1039/c6cp01009a
复制
发表时间：
2016-04-28
影响因子：
3.3
通讯作者：
Wan, Jian-Guo
中科院分区：
文献类型：
--
作者：
Ge, Gui-Xian;Li, Ying-Bin;Wan, Jian-Guo
为了解决数据存储应用中的根本困境，操纵磁各向异性能量（MAE）是至关重要的。在此，通过第一性原理计算，我们预测铱原子修饰的双空位石墨烯系统具有高稳定性、巨大的MAE、垂直各向异性和远程铁磁耦合。更重要的是，MAE的幅度可以通过电场来操纵。这是由于Ir-5d轨道占据数的变化。本发明的混合系统可以是具有超低能耗的高性能纳米级信息存储装置。
To solve the fundamental dilemma in data storage applications, it is crucial to manipulate the magnetic anisotropy energy (MAE). Herein, using first-principles calculations, we predict that the system of double-vacancy graphene decorated by iridium atoms possesses high stability, giant MAE, perpendicular-anisotropy and long-range ferromagnetic coupling. More importantly, the amplitude of MAE can be manipulated by electric fields. This is due to the change in the occupation number of Ir-5d orbitals. The present hybrid system could be a high-performance nanoscale information storage device with ultralow energy consumption.