Atomic-Scale Visualization of Quasiparticle Interference on a Type-II Weyl Semimetal Surface

Hao Zheng, Guang Bian, Guoqing Chang, Hong Lu, Su Yang Xu, Guangqiang Wang, Tay Rong Chang, Songtian Zhang, Ilya Belopolski, Nasser Alidoust, Daniel S. Sanchez, Fengqi Song, Horng Tay Jeng, Nan Yao, Arun Bansil, Shuang Jia, Hsin Lin, M. Zahid Hasan

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

We combine quasiparticle interference simulation (theory) and atomic resolution scanning tunneling spectromicroscopy (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.

Original languageEnglish
Article number266804
JournalPhysical review letters
Volume117
Issue number26
DOIs
Publication statusPublished - 2016 Dec 23

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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