We combine quasiparticle interference simulation (theory) and atomic resolution scanning tunneling spectro-microscopy (experiment) to visualize the interference patterns on a type-II Weyl semimetal MoxW1−xTe2 for the first time. Our simulation based on first-principles band topology theoretically reveals the surface electron scattering behavior. We identify the topological Fermi arc states and reveal the scattering properties of the surface states in Mo0.66W0.34Te2. In addition, our result reveals an experimental signature of the topology via the interconnectivity of bulk and surface states, which is essential for understanding the unusual nature of this material.
@article{arxiv.1612.05208,
title = {Atomic-scale visualization of quasiparticle interference on a type-II Weyl semimetal surface},
author = {Hao Zheng and Guang Bian and Guoqing Chang and Hong Lu and Su-Yang Xu and Guangqiang Wang and Tay-Rong Chang and Songtian Zhang and Ilya Belopolski and Nasser Alidoust and Daniel S. Sanchez and Fengqi Song and Horng-Tay Jeng and Nan Yao and Arun Bansil and Shuang Jia and Hsin Lin and M. Zahid Hasan},
journal= {arXiv preprint arXiv:1612.05208},
year = {2017}
}