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Impact of Scaling on the Dipolar Coupling in Magnet–Insulator–Magnet Structures

机译:标度对磁体-绝缘体-磁体结构中偶极耦合的影响

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摘要

The ability to control the magnetization of individual nanomagnets has made possible a broad class of devices, which store and manipulate information in the form of magnetization. For these devices to serve as building blocks for computation, they must be concatenable while allowing the information to flow in a directional manner. One scheme that has been proposed for this is the use of a dipolar coupling unit, a vertical stack of magnet–insulator–magnet, in which the information is transmitted from one magnet to the other through dipolar interaction. In this paper, we have used a novel magnetic force microscopy-based approach to demonstrate that a vertical dipolar coupling unit can be used to transfer information. We also investigated how the strength of the interaction can be maximized while preserving the directionality. The experimental observations were understood using micromagnetic simulations, and a scaling approach has been proposed for ultra-thin magnets.
机译:控制单个纳米磁铁的磁化的能力使各种各样的设备成为可能,这些设备以磁化的形式存储和处理信息。为了使这些设备用作计算的构建块,它们必须是可串联的,同时允许信息以定向方式流动。为此提出的一种方案是使用偶极耦合单元,即磁体-绝缘体-磁体的垂直堆叠,其中信息通过偶极相互作用从一个磁体传输到另一个磁体。在本文中,我们使用了一种新颖的基于磁力显微镜的方法来证明可以使用垂直偶极耦合单元传输信息。我们还研究了如何在保持方向性的同时最大化交互的强度。使用微磁模拟可以理解实验观察结果,并且已经提出了用于超薄磁体的缩放方法。

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