Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy

Hao Zheng; Su Yang Xu; Guang Bian; Cheng Guo; Guoqing Chang; Daniel S. Sanchez; Ilya Belopolski; Chi Cheng Lee; Shin Ming Huang; Xiao Zhang; Raman Sankar; Nasser Alidoust; Tay Rong Chang; Fan Wu; Titus Neupert; Fangcheng Chou; Horng Tay Jeng; Nan Yao; Arun Bansil; Shuang Jia; Hsin Lin; M. Zahid Hasan

doi:10.1021/acsnano.5b06807

Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy

Hao Zheng, Su Yang Xu, Guang Bian, Cheng Guo, Guoqing Chang, Daniel S. Sanchez, Ilya Belopolski, Chi Cheng Lee, Shin Ming Huang, Xiao Zhang, Raman Sankar, Nasser Alidoust, Tay Rong Chang, Fan Wu, Titus Neupert, Fangcheng Chou, Horng Tay Jeng, Nan Yao, Arun Bansil, Shuang JiaHsin Lin, M. Zahid Hasan

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1378-1385
Number of pages	8
Journal	ACS Nano
Volume	10
Issue number	1
DOIs	https://doi.org/10.1021/acsnano.5b06807
State	Published - Jan 26 2016

All Science Journal Classification (ASJC) codes

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

Keywords

Scanning tunneling microscopy
Topological matter
Weyl semimetal

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10.1021/acsnano.5b06807

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Zheng, H., Xu, S. Y., Bian, G., Guo, C., Chang, G., Sanchez, D. S., Belopolski, I., Lee, C. C., Huang, S. M., Zhang, X., Sankar, R., Alidoust, N., Chang, T. R., Wu, F., Neupert, T., Chou, F., Jeng, H. T., Yao, N., Bansil, A., ... Hasan, M. Z. (2016). Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy. ACS Nano, 10(1), 1378-1385. https://doi.org/10.1021/acsnano.5b06807

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 ; Jia, Shuang ; Lin, Hsin ; Hasan, M. Zahid. / Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy. In: ACS Nano. 2016 ; Vol. 10, No. 1. pp. 1378-1385.

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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}",

year = "2016",

month = jan,

day = "26",

doi = "10.1021/acsnano.5b06807",

language = "English (US)",

volume = "10",

pages = "1378--1385",

journal = "ACS Nano",

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Zheng, H, Xu, SY, Bian, G, Guo, C, Chang, G, Sanchez, DS, Belopolski, I, Lee, CC, Huang, SM, Zhang, X, Sankar, R, Alidoust, N, Chang, TR, Wu, F, Neupert, T, Chou, F, Jeng, HT, Yao, N, Bansil, A, Jia, S, Lin, H & Hasan, MZ 2016, 'Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy', ACS Nano, vol. 10, no. 1, pp. 1378-1385. https://doi.org/10.1021/acsnano.5b06807

Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy. / 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; Jia, Shuang; Lin, Hsin; Hasan, M. Zahid.

In: ACS Nano, Vol. 10, No. 1, 26.01.2016, p. 1378-1385.

Research output: Contribution to journal › Article › peer-review

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T1 - Atomic-scale visualization of quantum interference on a weyl semimetal surface by scanning tunneling microscopy

AU - Zheng, Hao

AU - Xu, Su Yang

AU - Bian, Guang

AU - Guo, Cheng

AU - Chang, Guoqing

AU - Sanchez, Daniel S.

AU - Belopolski, Ilya

AU - Lee, Chi Cheng

AU - Huang, Shin Ming

AU - Zhang, Xiao

AU - Sankar, Raman

AU - Alidoust, Nasser

AU - Chang, Tay Rong

AU - Wu, Fan

AU - Neupert, Titus

AU - Chou, Fangcheng

AU - Jeng, Horng Tay

AU - Yao, Nan

AU - Bansil, Arun

AU - Jia, Shuang

AU - Lin, Hsin

AU - Hasan, M. Zahid

PY - 2016/1/26

Y1 - 2016/1/26

N2 - 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.

AB - 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.

KW - Scanning tunneling microscopy

KW - Topological matter

KW - Weyl semimetal

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