1. Band Structure Perfection and Superconductivity in Type‐II Dirac Semimetal Ir 1− x Pt x Te 2
- Author
-
Baigeng Wang, Minhao Zhang, Fengqi Song, Xiangang Wan, Pengdong Wang, Qing Dai, Fucong Fei, Xuefeng Wang, Zhe Sun, Yi Zhang, Jian Li, Lu Cao, Xiangyan Bo, Jianghua Ying, Qianghua Wang, Bo Chen, Fanming Qu, Ke Chen, and Haijun Bu
- Subjects
Superconductivity ,Materials science ,Condensed matter physics ,Photoemission spectroscopy ,Mechanical Engineering ,Dirac (software) ,Fermi level ,Angle-resolved photoemission spectroscopy ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Semimetal ,MAJORANA ,symbols.namesake ,Mechanics of Materials ,0103 physical sciences ,symbols ,General Materials Science ,010306 general physics ,0210 nano-technology ,Electronic band structure - Abstract
The discovery of a new type-II Dirac semimetal in Ir1-x Ptx Te2 with optimized band structure is described. Pt dopants protect the crystal structure holding the Dirac cones and tune the Fermi level close to the Dirac point. The type-II Dirac dispersion in Ir1-x Ptx Te2 is confirmed by angle-resolved photoemission spectroscopy and first-principles calculations. Superconductivity is also observed and persists when the Fermi level aligns with the Dirac points. Ir1-x Ptx Te2 is an ideal platform for further studies on the exotic properties and potential applications of type-II DSMs, and opens up a new route for the investigation of the possible topological superconductivity and Majorana physics.
- Published
- 2018