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.)
Angle‐Resolved Photoemission of Topological Matter: Examples from Magnetism, Electron Correlation, and Phase Transitions
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2020-11-04 , DOI: 10.1002/pssb.202000371 Oliver Rader 1 , Jaime Sánchez‐Barriga 1 , Emile D. L. Rienks 1 , Andrei Varykhalov 1 , Gunther Springholz 2 , Lada V. Yashina 3
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2020-11-04 , DOI: 10.1002/pssb.202000371 Oliver Rader 1 , Jaime Sánchez‐Barriga 1 , Emile D. L. Rienks 1 , Andrei Varykhalov 1 , Gunther Springholz 2 , Lada V. Yashina 3
Affiliation
|
Topological materials promise new functionalities, which are revealed with the help of angle‐resolved photoemission. Herein, the search for the magnetic bandgap at the Dirac point as a precondition for the quantum anomalous Hall effect is reviewed and its opening for the topological insulator heterostructure MnBi2Te4/Bi2Te3 is demonstrated. Essential preconditions are explained and the reasons why nonmagnetic gaps occur when Se replaces Te. Angle‐resolved photoelectron spectroscopy (ARPES) probes the quantum mechanical final state, and this allows investigation of spin manipulation by light using spin‐resolved ARPES and the dependence of the charge carrier lifetime on the peculiar spin texture of topological states. It is shown that ARPES data do not support SmB6 as the first strongly correlated topological insulator and an alternative, trivial explanation for the results of ARPES and electrical transport experiments is formulated. Epitaxially grown topological crystalline insulators are, due to their dependence on crystal symmetries, more versatile in the control of individual bulk band inversions. It is shown that this leads to topological quantum phase transitions and associated novel functionalities. Finally, the surface and bulk band connectivity of a type‐II 3D Weyl semimetal is investigated and an outlook is given for the scientific field.
中文翻译：
角度分辨的拓扑物质光发射：磁性，电子相关和相变的例子
拓扑材料有望带来新的功能，借助角分辨光发射技术可以揭示这些功能。在此，对作为狄拉克量子异常霍尔效应的前提的狄拉克点处的磁性带隙的研究进行了综述，并探讨了其对于拓扑绝缘体异质结构MnBi 2 Te 4 / Bi 2 Te 3的开放性。被证明。解释了基本的前提条件以及当Se代替Te时出现非磁性间隙的原因。角分辨光电子能谱（ARPES）探测了量子力学的最终状态，这使人们能够研究使用自旋分辨ARPES进行光的自旋操纵，以及电荷载流子寿命对拓扑状态特殊的自旋织构的依赖性。显示ARPES数据不支持SmB 6作为第一个高度相关的拓扑绝缘体，并对ARPES和电传输实验的结果进行了简单的解释。由于外延生长的拓扑晶体绝缘体对晶体对称性的依赖性，它们在控制各个体能带反转方面更为通用。结果表明，这导致拓扑量子相变和相关的新功能。最后，研究了II型3D Weyl半金属的表面和体带连接性，并对科学领域给出了展望。
更新日期：2021-01-10
中文翻译：
角度分辨的拓扑物质光发射：磁性，电子相关和相变的例子
拓扑材料有望带来新的功能，借助角分辨光发射技术可以揭示这些功能。在此，对作为狄拉克量子异常霍尔效应的前提的狄拉克点处的磁性带隙的研究进行了综述，并探讨了其对于拓扑绝缘体异质结构MnBi 2 Te 4 / Bi 2 Te 3的开放性。被证明。解释了基本的前提条件以及当Se代替Te时出现非磁性间隙的原因。角分辨光电子能谱（ARPES）探测了量子力学的最终状态，这使人们能够研究使用自旋分辨ARPES进行光的自旋操纵，以及电荷载流子寿命对拓扑状态特殊的自旋织构的依赖性。显示ARPES数据不支持SmB 6作为第一个高度相关的拓扑绝缘体，并对ARPES和电传输实验的结果进行了简单的解释。由于外延生长的拓扑晶体绝缘体对晶体对称性的依赖性，它们在控制各个体能带反转方面更为通用。结果表明，这导致拓扑量子相变和相关的新功能。最后，研究了II型3D Weyl半金属的表面和体带连接性，并对科学领域给出了展望。
京公网安备 11010802027423号