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Half-metallicity in zigzag phosphorene nanoribbons with magnetic edges

机译：磁边Zigzag磷烯纳米中的半金属性

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摘要

Phosphorene nanoribbons with magnetic edges are potentially attractive for nanoelectronic and spintronic applications. Here, the attention is focused on electronic and magnetic properties of these materials. Using a self-consistent computational method it is shown that, in general, two types of configuration with spontaneous edge magnetization can be responsible for lifting the spin degeneracy, and consequently for the appearance of the half-metallic behavior. Namely, in addition to the well-known configuration with edge states ferromagnetically coupled along each edge and aligned in parallel between the two edges, there is another one (much less explored) with edge states ferromagnetically aligned on only one edge. The ground state magnetic configurations strongly depend on the chemical potential position (electron filling factor), and can be controlled by means of the external perpendicular gate voltage, and by changing the nanoribbon width. It is also shown that the magnetic edge configurations responsible for the half-metallicity can be stabilized with ferromagnetic substrates, due to the proximity effect.
机译：亚磷纳米带磁性的边缘是纳米电子和自旋电子应用的潜在吸引力。在这里，注意力集中在这些材料的电子和磁性。使用中，示出的是，在一般情况下，两种类型的具有自发磁化边缘配置可以负责解除自旋简并性，并且因此为半金属行为的外观的自洽计算方法。即，除了与边缘状态沿着每个边缘铁磁耦合，并在两个边缘之间平行对准的公知的结构，有另一个（少得多的探讨）与边缘状态仅在一个边缘铁磁对齐。基态磁性配置强烈地依赖于化学势位置（电子填充因子），并且可以由外部垂直栅极电压来控制，并通过改变纳米带的宽度。它也表明，负责的半金属磁性边缘构造可以与铁磁基板来稳定，由于邻近效应。

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