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

TitleAtomic-Scale Visualization of Quasiparticle Interference on a Type-II Weyl Semimetal Surface
Publication TypeJournal Article
Year of Publication2016
AuthorsZheng, Hao, Bian Guang, Chang Guoqing, Lu Hong, Xu Su-Yang, Wang Guangqiang, Chang Tay-Rong, Zhang Songtian, Belopolski Ilya, Alidoust Nasser, Sanchez Daniel S., Song Fengqi, Jeng Horng-Tay, Yao Nan, Bansil Arun, Jia Shuang, Lin Hsin, and Hasan Zahid M.
JournalPhys. Rev. Lett.
Volume117
Pagination266804
Date Published12/2016
ISSN0031-9007
Keywordshall, mote2, texture, topological fermi arcs, transition
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.

DOI10.1103/PhysRevLett.117.266804

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