scholarly journals Simulation of Single Molecule Inelastic Electron Tunneling Signals in Paraphenylene−Vinylene Oligomers and Distyrylbenzene[2.2]paracyclophanes

2006 ◽  
Vol 110 (19) ◽  
pp. 6329-6338 ◽  
Author(s):  
Jeremy B. Maddox ◽  
Upendra Harbola ◽  
Ning Liu ◽  
Christophe Silien ◽  
Wilson Ho ◽  
...  
2019 ◽  
Vol 10 ◽  
pp. 1243-1250
Author(s):  
Rouzhaji Tuerhong ◽  
Mauro Boero ◽  
Jean-Pierre Bucher

The vibrational excitation related transport properties of a manganese phthalocyanine molecule suspended between the tip of a scanning tunneling microsope (STM) and a surface are investigated by combining the local manipulation capabilities of the STM with inelastic electron tunneling spectroscopy. By attachment of the molecule to the probe tip, the intrinsic physical properties similar to those exhibited by a free standing molecule become accessible. This technique allows one to study locally the magnetic properties, as well as other elementary excitations and their mutual interaction. In particular a clear correlation is observed between the Kondo resonance and the vibrations with a strong incidence of the Kondo correlation on the thermopower measured across the single-molecule junction.


2004 ◽  
Vol 93 (26) ◽  
Author(s):  
L. H. Yu ◽  
Z. K. Keane ◽  
J. W. Ciszek ◽  
L. Cheng ◽  
M. P. Stewart ◽  
...  

2015 ◽  
Vol 6 ◽  
pp. 2477-2484 ◽  
Author(s):  
Riccardo Frisenda ◽  
Mickael L Perrin ◽  
Herre S J van der Zant

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.


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