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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 59, Number 1
JKCSEZ 59(1)
February 20, 2015

Title	Oxygen-Silver Junction Formation for Single Molecule Conductance
Author	Han Yeol Jo, Pil Sun Yoo, Taekyeong Kim*
Keywords	STM break-junction, Single molecule electronics, Oxygen, Ag electrodes
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.
Page	18 - 21
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