Band Structure Perfection and Superconductivity in Type-II Dirac Semimetal Ir Pt Te.

Adv Mater

National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Department of Physics, Nanjing University, Nanjing, 210093, China.

Published: August 2018

The discovery of a new type-II Dirac semimetal in Ir Pt Te 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 Ir Pt Te 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. Ir Pt Te 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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http://dx.doi.org/10.1002/adma.201801556DOI Listing

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