Atomic switches of metallic point contacts by plasmonic heating

作     者：Weiqiang Zhang Hongshuang Liu Jinsheng Lu Lifa Ni Haitao Liu Qiang Li Min Qiu Bingqian Xu Takhee Lee Zhikai Zhao Xianghui Wang Maoning Wang Tao Wang Andreas Offenhausser Dirk Mayer Wang-Taek Hwang Dong Xiang 

作者机构：Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network TechnologyKey Laboratory of Optical Information Science and TechnologyInstitute of Modern OpticsCollege of Electronic Information and Optical EngineeringNankai University300350 TianjinChina State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang University310027 HangzhouChina College of EngineeringUniversity of GeorgiaAthensGA 30602USA Department of Physics and Astronomyand Institute of Applied PhysicsSeoul National UniversitySeoul 08826Korea Institute of Materials Research and EngineeringA*STAR2 Fusionopolis WayInnovisSingapore 138634Singapore Institute of Complex SystemsICS-8BioelectronicsResearch Center Juelich and JARA Fundamentals of Future Information TechnologyJülich 52425Germany 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2019年第8卷第1期

页      面：893-900页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the financial support from the National Natural Science Foundation of China(61571242,61775105,11504270) the National Key Research and Development program of China(Grant no.2017YFA0205700) the Fundamental Research Funds for the Central Universities of China the National Creative Research Laboratory program(Grant no.2012026372)via the National Research Foundation of Korea 

主　　题：metallic behavior illumination 

摘      要：Electronic switches with nanoscale dimensions satisfy an urgent demand for further device miniaturization.A recent heavily investigated approach for nanoswitches is the use of molecular junctions that employ photochromic molecules that toggle between two distinct *** contrast to the reports on this approach,we demonstrate that the conductance switch behavior can be realized with only a bare metallic contact without any molecules under light *** demonstrate that the conductance of bare metallic quantum contacts can be reversibly switched over eight orders of magnitude,which substantially exceeds the performance of molecular *** the switch process,the gap size between two electrodes can be precisely adjusted with subangstrom accuracy by controlling the light intensity or *** by simulations,we reveal a more general and straightforward mechanism for nanoswitching behavior,i.e.,atomic switches can be realized by the expansion of nanoelectrodes due to plasmonic heating.