Band Structure Perfection and Superconductivity in Type‐II Dirac Semimetal Ir1−xPtxTe2

Fucong Fei, Xiangyan Bo, Pengdong Wang, Jianghua Ying, Jian Li, Ke Chen, Qing Dai, Bo Chen, Zhe Sun, Minhao Zhang

Type: Article

Publication Date: 2018-07-17

Citations: 49

DOI: https://doi.org/10.1002/adma.201801556

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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.

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Band Structure Perfection and Superconductivity in Type‐II Dirac Semimetal Ir<sub>1−</sub><i><sub>x</sub></i>Pt<i><sub>x</sub></i>Te<sub>2</sub>

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