论文标题
磁性和层间粘结在Bernal堆叠的六边形硝酸硼的孔中
Magnetism and Interlayer Bonding in Pores of Bernal-Stacked Hexagonal Boron Nitride
论文作者
论文摘要
当单层H-BN受到高能电子束进行时，会形成具有氮边缘的三角形孔。由于SP2键断裂，因此已知这些孔具有磁性状态。我们报告了三角孔的磁性和电子结构，其大小的函数。此外，在Bernal堆叠的H-BN（AB-H-BN）中，可以创建具有平行边缘的多层孔，这在常见的多层AA'-H-BN中是不可能的。鉴于这些孔可以使用电子束以良好的控制方式制造，因此了解相邻层中孔的相互作用很重要。我们发现，在某些配置中，相邻孔的边缘保持打开状态并保留其磁性，在其他孔中，它们形成了层间键。我们提供了有关小纳米孔这些配置的综合报告。我们发现，在低温下，这些孔的磁性构型接近，并且可以用于磁化和纺纱液应用中。在形成较大的多层纳米孔的过程中，可以形成层间键，从而减少磁化。然而，所有尺寸的无与伦比的平行多层边缘仍然可用。了解这些孔也有助于多种应用，例如DNA测序和量子发射。
When single-layer h-BN is subjected to a high-energy electron beam, triangular pores with nitrogen edges are formed. Because of the broken sp2 bonds, these pores are known to possess magnetic states. We report on the magnetism and electronic structure of triangular pores as a function of their size. Moreover, in the Bernal-stacked h-BN (AB-h-BN), multilayer pores with parallel edges can be created, which is not possible in the commonly fabricated multilayer AA'-h-BN. Given that these pores can be manufactured in a well-controlled fashion using an electron beam, it is important to understand the interactions of pores in neighboring layers. We find that in certain configurations, the edges of the neighboring pores remain open and retain their magnetism, and in others, they form interlayer bonds. We present a comprehensive report on these configurations for small nanopores. We find that at low temperatures, these pores have near degenerate magnetic configurations, and may be utilized in magnetoresistance and spintronics applications. In the process of forming larger multilayer nanopores, interlayer bonds can form, reducing the magnetization. Yet, unbonded parallel multilayer edges remain available at all sizes. Understanding these pores is also helpful in a multitude of applications such as DNA sequencing and quantum emission.
