@article{441b98879b1b45b1bcf4796c204ccc47,
title = "Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy",
abstract = "Weyl semimetals may open a new era in condensed matter physics, materials science, and nanotechnology after graphene and topological insulators. We report the first atomic scale view of the surface states of a Weyl semimetal (NbP) using scanning tunneling microscopy/ spectroscopy. We observe coherent quantum interference patterns that arise from the scattering of quasiparticles near point defects on the surface. The measurements reveal the surface electronic structure both below and above the chemical potential in both real and reciprocal spaces. Moreover, the interference maps uncover the scattering processes of NbP's exotic surface states. Through comparison between experimental data and theoretical calculations, we further discover that the orbital and/or spin texture of the surface bands may suppress certain scattering channels on NbP. These results provide a comprehensive understanding of electronic properties on Weyl semimetal surfaces.",
keywords = "Scanning tunneling microscopy, Topological matter, Weyl semimetal",
author = "Hao Zheng and Xu, {Su Yang} and Guang Bian and Cheng Guo and Guoqing Chang and Sanchez, {Daniel S.} and Ilya Belopolski and Lee, {Chi Cheng} and Huang, {Shin Ming} and Xiao Zhang and Raman Sankar and Nasser Alidoust and Chang, {Tay Rong} and Fan Wu and Titus Neupert and Fangcheng Chou and Jeng, {Horng Tay} and Nan Yao and Arun Bansil and Shuang Jia and Hsin Lin and Hasan, {M. Zahid}",
note = "Funding Information: The STM measurements at Princeton University were supported by the Gordon and Betty Moore Foundations EPiQS Initiative through Grant GBMF4547 (Hasan). Theoretical calculations at National University of Singapore were supported by the National Research Foundation, Prime Minister's Office, Singapore, under its NRF fellowship (NRF Award No. NRF-NRFF2013-03). NbP crystal growth was supported by National Basic Research Program of China (Grant No. 2013CB921901 and 2014CB239302). F.C. acknowledges the support provided by MOST-Taiwan under Project No. 102-2119-M-002-004. This work was also supported in part by the National Science Foundation-MRSEC program through the Princeton Center for Complex Materials (DMR-1420541; NY, FW). T.-R.C. and H.-T.J. are supported by National Science Council, Academia Sinica, and National Tsing Hus University, Taiwan, and also thank NCHC, CINC-NTU, and NCTS, Taiwan, for technical support. The work at Northeastern University was supported by the US Department of Energy (DOE), Office of Science, Basic Energy Sciences Grant No. DE-FG02-07ER46352, and benefited from Northeastern University's Advanced Scientific Computation Center (ASCC) and the NERSC supercomputing center through DOE Grant No. DE-AC02-05CH11231. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",
year = "2016",
month = jan,
day = "26",
doi = "10.1021/acsnano.5b06807",
language = "English (US)",
volume = "10",
pages = "1378--1385",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "1",
}