One-Dimensional Metal Embedded in Two-Dimensional Semiconductor in Nb2Six-1Te4
Wang, Binbin1,2; Xia, Wei1,3; Li, Si4,5; Wang, Kang1,2; Yang, Shengyuan A.4; Guo, Yanfeng1; Xue, Jiamin1
2021
Source PublicationACS NANO
ISSN1936-0851
EISSN1936-086X
Volume15Issue:4Pages:7149-7154
Status已发表
DOI10.1021/acsnano.1c00320
Abstract

The ternary van der Waals material Nb2Six-1Te4 demonstrates many interesting properties as the content of Si is changed, ranging from metallic Nb3SiTe6 (x = 5/3) to narrow-gap semiconductor Nb2SiTe4 (x = 2) and with the emergence of one-dimensional Dirac fermion excitations in between. An in-depth understanding of their properties with different stoichiometry is important. Here we use scanning tunneling microscopy and spectroscopy to reveal that Nb2Six-1Te4 is a system with spontaneously developed and self-aligned one-dimensional metallic chains embedded in a two-dimensional semiconductor. Electron quasiparticles form one- and two-dimensional standing waves side by side. This special microscopic structure results in strong transport anisotropy. Along the chain direction the material behaves like a metal, while perpendicular to the chain direction, it behaves like a semiconductor. These findings provide an important basis for further investigation of this intriguing system.

KeywordNb2Six-1Te4 1D metallic chain 2D semiconductor anisotropy scanning tunneling microscopy (STM) standing waves
Indexed BySCIE
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000645436800103
PublisherAMER CHEMICAL SOC
Original Document TypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/126680
Collection物质科学与技术学院_博士生
物质科学与技术学院_PI研究组_薛加民组
物质科学与技术学院_PI研究组_郭艳峰组
物质科学与技术学院_公共科研平台_拓扑物理实验室
Co-First AuthorXia, Wei
Corresponding AuthorGuo, Yanfeng; Xue, Jiamin
Affiliation1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China;
4.Singapore Univ Technol & Design, Res Lab Quantum Mat, Singapore 487372, Singapore;
5.Northwest Univ, Sch Phys, Xian 710069, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Wang, Binbin,Xia, Wei,Li, Si,et al. One-Dimensional Metal Embedded in Two-Dimensional Semiconductor in Nb2Six-1Te4[J]. ACS NANO,2021,15(4):7149-7154.
APA Wang, Binbin.,Xia, Wei.,Li, Si.,Wang, Kang.,Yang, Shengyuan A..,...&Xue, Jiamin.(2021).One-Dimensional Metal Embedded in Two-Dimensional Semiconductor in Nb2Six-1Te4.ACS NANO,15(4),7149-7154.
MLA Wang, Binbin,et al."One-Dimensional Metal Embedded in Two-Dimensional Semiconductor in Nb2Six-1Te4".ACS NANO 15.4(2021):7149-7154.
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