论文标题
Van der Waals材料Fe $ _3 $ gete $ _2 $的磁性域墙壁
Magnetic domain walls of the van der Waals material Fe$_3$GeTe$_2$
论文作者
论文摘要
在二维材料中，Fe $ _3 $ gete $ _2 $由于其铁磁性质而占据了一个非常重要的位置，在已知的Van der Waals材料中具有最高的居里温度之一，并且有可能托管Skyrmions。在这项结合的实验和理论工作中，我们使用自旋极化扫描隧道显微镜研究了磁性气泡结构域以及微观结构域壁曲线，并结合了与密度功能理论计算的参数进行的原子自旋 - 动力学模拟。我们发现弱磁电效应影响了隧道连接中的电场影响结构域壁宽度，并确定气泡结构域塌陷的临界磁场。我们的发现阐明了复杂磁性的起源，即Fe $ _3 $ gete $ _2 $展览。
Among two-dimensional materials, Fe$_3$GeTe$_2$ has come to occupy a very important place owing to its ferromagnetic nature with one of the highest Curie temperatures among known van der Waals materials and the potential for hosting skyrmions. In this combined experimental and theoretical work, we investigate the magnetic bubble domains as well as the microscopic domain wall profile using spin-polarized scanning tunneling microscopy in combination with atomistic spin-dynamics simulations performed with parameters from density functional theory calculations. We find a weak magneto-electric effect influencing the domain wall width by the electric field in the tunneling junction and determine the critical magnetic field for the collapse of the bubble domains. Our findings shed light on the origins of complex magnetism that Fe$_3$GeTe$_2$ exhibits.
