Lifting surface reconstruction of Au(100)by tellurium adsorption
作者机构：Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of EducationState Key Laboratory of Mechanics and Control of Mechanical StructuresInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNanjing 210016China College of JinchengNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Applied PhysicsThe Hong Kong Polytechnic UniversityHung HomHong KongChina
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第5期
页 面：6967-6973页
核心收录：
学科分类：07[理学] 070304[理学-物理化学(含∶化学物理)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：the National Natural Science Foundation of China(No.1210040808) the Natural Science Foundation of Jiangsu Province(Nos.BK20210312 and BK20212008) the National Key Research and Development Program of China(No.2019YFA0705400) the Fundamental Research Funds for the Central Universities(Nos.NJ2022002,NZ2020001,and NS2022014) the Program for Innovative Talents and Entrepreneur in Jiangsu,Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures(Nos.MCMS-I-0419G02 and MCMS-I-0421K01) a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
主 题：surface reconstruction of Au(100) tellurium facet-dependence adsorption energy anisotropy
摘 要：The Au(100)surface has been a subject of intense studies due to excellent catalytic activities and its model character for surface science.However,the spontaneous surface reconstruction buries active Au(100)plane and limits practical applications,how to controllably eliminate the surface reconstruction over large scale remains challenging.Here,we experimentally and theoretically demonstrate that simple decoration of the Au(100)surface by tellurium(Te)atoms can uniquely lift its reconstruction over large scale.Scanning tunneling microscopy imaging reveals that the lifting of surface reconstruction preferentially starts from the boundaries of distinct domains and then extends progressively into the domains with the reconstruction rows perpendicular to the boundaries,leaving a Au(100)-(1×1)surface behind.The Au(100)-(1×1)is saturated at~84%±2%with respect to the whole surface at a Te coverage of 0.16 monolayer.With further increasing the Te coverage to 0.25 monolayer,the Au(100)-(1×1)surface becomes reduced and overlapped by a well-ordered(2×2)-Te superstructure.No similar behavior is found for Te-decorated Au(111),Cu(111),Cu(100)surfaces,nor for the decorated Au(100)with other elements.This result may pave the way to design Au-based catalysts and,as an intermediate step,even potentially open a new route to constructing complex transition metal dichalcogenides.
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