当前位置: X-MOL 学术Phys. Status Solidi B › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ab Initio Theory of Fourier‐Transformed Quasiparticle Interference Maps and Application to the Topological Insulator Bi2Te3
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.6 ) Pub Date : 2020-05-25 , DOI: 10.1002/pssb.202000031
Philipp Rüßmann 1 , Phivos Mavropoulos 2 , Stefan Blügel 1
Affiliation  

The quasiparticle interference (QPI) technique is a powerful tool that allows to uncover the structure and properties of electronic structure of a material combined with scattering properties of defects at surfaces. Recently, this technique has been pivotal in proving the unique properties of the surface state of topological insulators which manifests itself in the absence of backscattering. Herein, a Green function‐based formalism is derived for the ab initio computation of Fourier‐transformed QPI images. The efficiency of the new implementation is shown at the examples of QPI that forms around magnetic and nonmagnetic defects at the Bi2Te3 surface. This method allows a deepened understanding of the scattering properties of topologically protected electrons off defects and is a useful tool in the study of quantum materials in the future.

中文翻译:

傅里叶变换拟粒子干扰图的从头算理论及其在拓扑绝缘子Bi2Te3中的应用

准粒子干涉(QPI)技术是一种功能强大的工具,它可以揭示材料的电子结构的结构和特性,以及表面缺陷的散射特性。近来,该技术在证明拓扑绝缘子的表面状态的独特性质方面具有关键作用,这种独特的性质在没有反向散射的情况下表现出来。在此,派生出基于Green函数的形式主义,用于从头算傅里叶变换后的QPI图像。QPI的示例显示了新实现的效率,该示例围绕Bi 2 Te 3处的磁性和非磁性缺陷形成表面。该方法可以加深对受拓扑保护的电子离开缺陷的散射特性的了解,并且是将来研究量子材料的有用工具。
更新日期:2020-05-25
down
wechat
bug