Atomic switches of metallic point contacts by plasmonic heating

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 Offenhäusser; Dirk Mayer; Wang-Taek Hwang; Dong Xiang

doi:10.1038/s41377-019-0144-z

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Atomic switches of metallic point contacts by plasmonic heating

Article

- Atomic switches of metallic point contacts by plasmonic heating
- Light: Science & Applications Vol. 8, Issue 3, Pages: 333-340(2019)
- Affiliations：
  
  1.Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350, Tianjin, China
  2.State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027, Hangzhou, China
  3.College of Engineering, University of Georgia, Athens, GA, 30602, USA
  4.Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea
  5.Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore
  6.Institute of Complex Systems, ICS-8, Bioelectronics, Research Center Juelich and JARA Fundamentals of Future Information Technology, Jülich, 52425, Germany
- Author bio：
  
  Bingqian Xu (bxu@engr.uga.edu)
  Takhee Lee (tlee@snu.ac.kr)
  Dong Xiang (xiangdongde@nankai.edu.cn)
- Funds：
- DOI：10.1038/s41377-019-0144-z
  CLC：
- Published：2019，
  
  Published Online：27 March 2019，
  
  Received：05 February 2019，
  
  Revised：01 March 2019，
  
  Accepted：03 March 2019
- Accepted：
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Zhang, W. Q. et al. Atomic switches of metallic point contacts by plasmonic heating. Light: Science & Applications, 8, 333-340 (2019).
DOI：

Zhang, W. Q. et al. Atomic switches of metallic point contacts by plasmonic heating. Light: Science & Applications, 8, 333-340 (2019). DOI： 10.1038/s41377-019-0144-z.

摘要

Abstract

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 isoforms. In 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 illumination. We 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 switches. After the switch process

the gap size between two electrodes can be precisely adjusted with subangstrom accuracy by controlling the light intensity or polarization. Supported 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.

关键词

Keywords

references

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