Evidence of a Coulomb-Interaction-Induced Lifshitz Transition and Robust Hybrid Weyl Semimetal in Td−MoTe2
| Autor: | Ming Shi, Jan Hugo Dil, Ph. Bugnon, Rui Yu, Zhouguang Wang, Nicholas C. Plumb, Helmuth Berger, Arnaud Magrez, Nan Xu, Joël Mesot, K. Conder, Hong Ding, Milan Radovic, C. E. Matt, Ekaterina Pomjakushina, Vladimir N. Strocov |
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| Rok vydání: | 2018 |
| Předmět: |
Superconductivity
Physics Condensed matter physics Photoemission spectroscopy General Physics and Astronomy Weyl semimetal 02 engineering and technology Electronic structure 021001 nanoscience & nanotechnology Coupling (probability) 01 natural sciences symbols.namesake 0103 physical sciences symbols Coulomb van der Waals force 010306 general physics 0210 nano-technology Energy (signal processing) |
| Zdroj: | Physical Review Letters. 121 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | Using soft x-ray angle-resolved photoemission spectroscopy we probed the bulk electronic structure of T_{d}-MoTe_{2}. We found that on-site Coulomb interaction leads to a Lifshitz transition, which is essential for a precise description of the electronic structure. A hybrid Weyl semimetal state with a pair of energy bands touching at both type-I and type-II Weyl nodes is indicated by comparing the experimental data with theoretical calculations. Unveiling the importance of Coulomb interaction opens up a new route to comprehend the unique properties of MoTe_{2}, and is significant for understanding the interplay between correlation effects, strong spin-orbit coupling and superconductivity in this van der Waals material. |
| Databáze: | OpenAIRE |
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