Experimental realization of honeycomb borophene

被引：411

作者：

Li, Wenbin ^{[1
,2
]}

Kong, Longjuan ^{[1
,2
]}

Chen, Caiyun ^{[1
,2
]}

Gou, Jian ^{[1
,2
]}

Sheng, Shaoxiang ^{[1
,2
]}

Zhang, Weifeng ^{[3
]}

Li, Hui ^{[4
]}

Chen, Lan ^{[1
,2
]}

Cheng, Peng ^{[1
,2
]}

Wu, Kehui ^{[1
,2
,5
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[3] Henan Univ, Sch Phys & Elect, Kaifeng 475004, Peoples R China

[4] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China

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

来源：

SCIENCE BULLETIN | 2018年 / 63卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Borophene; Honeycomb structure; 2D materials; 2-DIMENSIONAL BORON; EPITAXIAL-GROWTH; SILICENE; LAYER;

D O I：

10.1016/j.scib.2018.02.006

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report the successful preparation of a purely honeycomb, graphene-like borophene, by using an Al(111) surface as the substrate and molecular beam epitaxy (MBE) growth in ultrahigh vacuum. Scanning tunneling microscopy (STM) images reveal perfect monolayer borophene with planar, non-buckled honeycomb lattice similar as graphene. Theoretical calculations show that the honeycomb borophene on Al (111) is energetically stable. Remarkably, nearly one electron charge is transferred to each boron atom from the Al(111) substrate and stabilizes the honeycomb borophene structure, in contrast to the negligible charge transfer in case of borophene/Ag(111). The existence of honeycomb 2D allotrope is important to the basic understanding of boron chemistry, and it also provides an ideal platform for fabricating boron-based materials with intriguing electronic properties such as Dirac states. (C) 2018 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

引用

页码：282 / 286

页数：5

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