论文标题
用电场的撰写和删除多雌性异质结构
Writing and deleting skyrmions with electric fields in a multiferroic heterostructure
论文作者
论文摘要
磁性天空是拓扑自旋纹理，可以用作下一代信息存储和处理的信息载体。这种设备中的天空电场控制是必不可少的，但在技术上仍然具有挑战性。在这里，使用第一原理计算和Ginzburg-Landau理论，我们在多精神异质结构的平台上提出了一个可靠的过程，用于通过电场编写和删除Skyrmions，尤其是$ \ text {Cr} {CR} _ {2} _ {2} _ {2} \ text} \ text {in} _ {2} \ text {se} _ {3} $ heterostructure。我们表明，电场控制电极化，并间接影响磁矩之间的反对称Dzyaloshinskii-Moriya相互作用（DMI）。后者负责产生和去除天际旋转纹理，我们通过金茨堡 - 兰道分析研究了这种机制。我们讨论了真实的空间浆果曲率，拓扑厅效应，可能的量子异常霍尔效应以及其他竞争磁性结构。这些结果代表了量子技术的示例，并且可能在未来的Skyrmionics和设备制造中具有潜在的应用。
Magnetic skyrmions are topological spin textures that can be used as information carriers for the next-generation information storage and processing. The electric-field controlling of skyrmions in such devices is essential but remains technologically challenging. Here, using the first-principles calculation and the Ginzburg-Landau theory, we propose a reliable process for writing and deleting skyrmions by electric fields, on the platform of a multiferroic heterostructure, particularly the $\text{Cr}_{2}\text{Ge}_{2}\text{Te}_{6} $/$ \text{In}_{2}\text{Se}_{3} $ heterostructure. We show that the electric field controls the electric polarization and indirectly influences the antisymmetric Dzyaloshinskii-Moriya interaction (DMI) between the magnetic moments. The latter is responsible for the generation and removal of the skyrmion spin textures, and we study this mechanism by the Ginzburg-Landau analysis. We discuss the real-space Berry curvature, topological Hall effects, possible quantum anomalous Hall effect, and other competing magnetic structures. These results represent examples of quantum technology and may have potential applications in future skyrmionics and the device fabrication.
