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

被引：62

作者：

Zheng, Hao ^{[1
]}

Bian, Guang ^{[1
]}

Chang, Guoqing ^{[2
,3
,4
]}

Lu, Hong ^{[5
]}

Xu, Su-Yang ^{[1
]}

Wang, Guangqiang ^{[5
]}

Chang, Tay-Rong ^{[6
]}

Zhang, Songtian ^{[1
]}

Belopolski, Ilya ^{[1
]}

Alidoust, Nasser ^{[1
]}

Sanchez, Daniel S. ^{[1
]}

Song, Fengqi ^{[7
,8
]}

Jeng, Horng-Tay ^{[6
,9
]}

Yao, Nan ^{[10
]}

Bansil, Arun ^{[11
]}

Jia, Shuang ^{[5
,12
]}

Lin, Hsin ^{[2
,3
,4
]}

Hasan, M. Zahid ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Lab Topol Quantum Matter & Spect B7, Princeton, NJ 08544 USA

[2] Natl Univ Singapore, Ctr Adv Mat 2D, 6 Sci Dr 2, Singapore 117546, Singapore

[3] Natl Univ Singapore, Graphene Res Ctr, 6 Sci Dr 2, Singapore 117546, Singapore

[4] Natl Univ Singapore, Dept Phys, 2 Sci Dr 3, Singapore 117542, Singapore

[5] Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[6] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[7] Nanjing Univ, Natl Lab Solid State Microstruct, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[8] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China

[9] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[10] Princeton Univ, Princeton Inst Sci & Technol Mat, 70 Prospect Ave, Princeton, NJ 08540 USA

[11] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[12] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 26期

基金：

中国国家自然科学基金; 新加坡国家研究基金会; 美国国家科学基金会;

关键词：

FERMI ARCS; TRANSITION; HALL;

D O I：

10.1103/PhysRevLett.117.266804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：6

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