[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5012/jkcs.2015.59.1.18

Oxygen-Silver Junction Formation for Single Molecule Conductance

Jo, Han Yeol (Department of Physics, Hankuk University of Foreign Studies)
Yoo, Pil Sun (Department of Physics, Hankuk University of Foreign Studies)
Kim, Taekyeong (Department of Physics, Hankuk University of Foreign Studies)

Publication Information

Journal of the Korean Chemical Society / v.59, no.1, 2015 , pp. 18-21 More about this Journal

Abstract

We use a scanning tunneling microscope based break-junction technique to measure the conductance of a 4,4'-dimethoxybiphenyl molecular junction formed with Ag and Au electrodes. We observe the formation of a clear molecular junction with Ag electrodes that result from stable Ag-oxygen bonding structures. However we have no molecular bonding formation when using Au electrodes, resulting in a tunneling current between the top and bottom metal electrodes. We also see a clear peak in the conductance histogram of the Ag-oxygen molecular junctions, but no significant molecular features are seen with Au electrodes. Our work should open a new path to the conductance measurements of single-molecule junctions with oxygen linkers.

Keywords

STM break-junction; Single molecule electronics; Oxygen; Ag electrodes;

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