Coexistence of Dirac and Weyl points in non-centrosymmetric semimetal NbIrTe4

被引：1

作者：

Liu, Qingxin ^{[1
,2
]}

Fu, Yang ^{[1
,2
]}

Ding, Pengfei ^{[1
,2
]}

Ma, Huan ^{[1
,2
]}

Guo, Pengjie ^{[1
,2
]}

Lei, Hechang ^{[1
,2
]}

Wang, Shancai ^{[1
,2
]}

机构：

[1] Renmin Univ China, Dept Phys, Key Lab Quantum State Construct & Manipulat, Minist Educ, Beijing 100872, Peoples R China

[2] Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano D, Beijing 100872, Peoples R China

来源：

CHINESE PHYSICS B | 2024年 / 33卷 / 04期

基金：

国家重点研发计划; 中国国家自然科学基金; 北京市自然科学基金;

关键词：

Fermi arc; Weyl point; Dirac point; angle-resolved photoemission spectroscopy; 71.18.+y; 71.20.-b; 79.60.-i; FERMIONS;

D O I：

10.1088/1674-1056/ad2a79

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using angle-resolved photoemission spectroscopy and density functional theory calculations methods, we investigate the electronic structures and topological properties of ternary tellurides NbIrTe4, a candidate for type-II Weyl semimetal. We demonstrate the presence of several Fermi arcs connecting their corresponding Weyl points on both termination surfaces of the topological material. Our analysis reveals the existence of Dirac points, in addition to Weyl points, giving both theoretical and experimental evidences of the coexistence of Dirac and Weyl points in a single material. These findings not only confirm NbIrTe4 as a unique topological semimetal but also open avenues for exploring novel electronic devices based on its coexisting Dirac and Weyl fermions.

引用

页数：6

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