论文标题
MN4嵌入式石墨烯层：可调的rkky相互作用速率
MN4 Embedded Graphene Layers: Tunable Decay Rate of RKKY Interaction
论文作者
论文摘要
高性能自旋设备开发中最重要的任务之一是制备具有远距离交换相互作用的二维（2D）磁层。 MN4嵌入的石墨烯（MN4-G）层，M为过渡金属元素，是实验可访问的2D层，它们具有有趣的磁性特性。在本文中，通过采用自旋密度功能理论（SP-DFT），我们研究了MN4-G层，特别关注间接M-M交换相互作用的行为，并证明具有M = Fe，MN和CO的MN4-GS是2d Anisotropic磁性层与Ruderman-kittel-katsuya-yosida（Rkky-yosida）（Rkkyysida）（Rkky）Interaction（Rkky）通过检查各种M-M垫片的M原子的电子构型，我们证明了此类层中的rkky相互作用是可调的，并且表现出异常的延长衰变（r to减去n，n，n在0.5和2之间的功率）。此外，我们研究了Cun4部分在石墨烯宿主中的影响，并表明与其他MN4-GS相反，2D CUN4-G层的行为就像脱钩的一维自旋链一样，无论垫片长度如何。
One of the most important tasks in the development of high-performance spintronic devices is the preparation of two dimensional (2D) magnetic layers with long-range exchange interactions. MN4 embedded graphene (MN4-G) layers, with M being transition metal elements, are experimentally accessible 2D layers, which exhibit interesting magnetic properties. In this paper, by employing the spin-polarized density functional theory (SP-DFT), we study MN4-G layers with a special focus on the behavior of the indirect M-M exchange interactions, and demonstrate that the MN4-Gs with M = Fe, Mn and Co, are 2D anisotropic magnetic layers with Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. By examining the electronic configurations of the M atoms for various M-M spacers, we demonstrate that the RKKY interaction in such layers are tunable and exhibiting an unusual prolonged decay (r to the power of minus n, n between 0.5 and 2). In addition, we investigate the influence of the CuN4 moiety in the graphene host, and show that, in contrary to the other MN4-Gs, the 2D CuN4-G layer behaves as decoupled one-dimensional spin chains, regardless of the spacer lengths.
