淡江大學機構典藏:Item 987654321/117354
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    题名: Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy
    作者: Zheng, Hao;Xu, Su-Yang;Bian, Guang;Guo, Cheng;Chang, Guoqing;Sanchez, Daniel S.;Belopolski, Ilya;Lee, Chi-Cheng;Huang, Shin-Ming;Zhang, Xiao;Sankar, Raman;Alidoust, Nasser;Chang, Tay-Rong;Wu, Fan;Neupert, Titus;Chou, Fangcheng;Jeng, Horng-Tay;Yao, Nan;Bansil, Arun;Shuang Jia, Hsin Lin;Hasan, M. Zahid
    关键词: Weyl semimetal;topological matter;scanning tunneling microscopy
    日期: 2016-01-08
    上传时间: 2019-10-10 12:10:29 (UTC+8)
    出版者: ACS Publications
    摘要: 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.
    關聯: ACS Nano 10, 1378
    DOI: 10.1021/acsnano.5b06807
    显示于类别:[物理學系暨研究所] 期刊論文

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