scholarly journals Origin and mechanism analysis of asymmetric current fluctuations in single-molecule junctions

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39408-39413
Author(s):  
Chunhui Gu ◽  
Hao Wang ◽  
Hantao Sun ◽  
Jianhui Liao ◽  
Shimin Hou ◽  
...  
Keyword(s):  
Electron Transport ◽  
Single Molecule ◽  
Transport Process ◽  
Current Noise ◽  
Current Fluctuations ◽  
Inelastic Electron ◽  
Mechanism Analysis ◽  
Single Molecule Junctions

The asymmetric current noise in a single-molecule device was observed, which is relevant to an inelastic electron transport process.

Modulating electron transport through single-molecule junctions by heteroatom substitution

2020 ◽  
Vol 8 (20) ◽  
pp. 6826-6831 ◽  
Author(s):  
Ya-Hao Wang ◽  
Hong Huang ◽  
Zhou Yu ◽  
Ju-Fang Zheng ◽  
Yong Shao ◽  
...  
Keyword(s):  
Electron Transport ◽  
Single Molecule ◽  
Molecular Level ◽  
Heteroatom Substitution ◽  
Single Molecule Junctions

Heteroatom substitutions in phenyl-based molecules are used to modulate electron transport at the single molecular level measured by STM-BJ.

scholarly journals Probing the local environment of a single OPE3 molecule using inelastic tunneling electron spectroscopy

2015 ◽  
Vol 6 ◽  
pp. 2477-2484 ◽  
Author(s):  
Riccardo Frisenda ◽  
Mickael L Perrin ◽  
Herre S J van der Zant
Keyword(s):  
Single Molecule ◽  
Electron Tunneling ◽  
Local Environment ◽  
Inelastic Electron ◽  
Phenylene Ethynylene ◽  
Electrode Separation ◽  
Quantum Chemistry Calculations ◽  
Single Molecule Junctions ◽  
Inelastic Electron Tunneling ◽  
Electron Tunneling Spectroscopy

We study single-molecule oligo(phenylene ethynylene)dithiol junctions by means of inelastic electron tunneling spectroscopy (IETS). The molecule is contacted with gold nano-electrodes formed with the mechanically controllable break junction technique. We record the IETS spectrum of the molecule from direct current measurements, both as a function of time and electrode separation. We find that for fixed electrode separation the molecule switches between various configurations, which are characterized by different IETS spectra. Similar variations in the IETS signal are observed during atomic rearrangements upon stretching of the molecular junction. Using quantum chemistry calculations, we identity some of the vibrational modes which constitute a chemical fingerprint of the molecule. In addition, changes can be attributed to rearrangements of the local molecular environment, in particular at the molecule–electrode interface. This study shows the importance of taking into account the interaction with the electrodes when describing inelastic contributions to transport through single-molecule junctions.

scholarly journals Numerically exact, time-dependent treatment of vibrationally coupled electron transport in single-molecule junctions

2011 ◽  
Vol 135 (24) ◽  
pp. 244506 ◽  
Author(s):  
Haobin Wang ◽  
Ivan Pshenichnyuk ◽  
Rainer Härtle ◽  
Michael Thoss
Keyword(s):  
Electron Transport ◽  
Single Molecule ◽  
Time Dependent ◽  
Exact Time ◽  
Single Molecule Junctions

Nature of Electron Transport by Pyridine-Based Tripodal Anchors: Potential for Robust and Conductive Single-Molecule Junctions with Gold Electrodes

2011 ◽  
Vol 133 (9) ◽  
pp. 3014-3022 ◽  
Author(s):  
Yutaka Ie ◽  
Tomoya Hirose ◽  
Hisao Nakamura ◽  
Manabu Kiguchi ◽  
Noriaki Takagi ◽  
...  
Keyword(s):  
Electron Transport ◽  
Single Molecule ◽  
Gold Electrodes ◽  
Single Molecule Junctions
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