Department of Physics and Astronomy, University of California , Irvine, California 92697-4575, United States.
Nano Lett. 2014;14(4):1853-8. doi: 10.1021/nl404627h. Epub 2014 Mar 27.
Continuous miniaturization of magnetic units in spintronics and quantum computing devices inspires efforts to search for magnetic nanostructures with giant magnetic anisotropy energy (MAE) and high structural stability. Through density functional theory calculations, we found that either Pt-Ir or Os-Ru dimer forms a stable vertical structure on the defected graphene and possess an MAE larger than 60 meV, sufficient for room-temperature applications. Interestingly, their MAEs can be conveniently manipulated by using an external electric field, which makes them excellent magnetic units in spintronics and quantum computing devices.
连续微型化的磁性单位在自旋电子学和量子计算设备激励努力寻找具有巨大的磁各向异性能量(MAE)和高结构稳定性的磁性纳米结构。通过密度泛函理论计算，我们发现无论是 Pt-Ir 或 Os-Ru 二聚体形成一个稳定的垂直结构的缺陷的石墨烯和拥有 MAE 大于 60 毫电子伏特，足以满足室温应用。有趣的是，他们的 MAE 可以方便地通过使用外部电场进行操作，这使得它们在自旋电子学和量子计算设备中的优秀磁性单位。
