This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1021/acs.jpca.7b00977 in citations.
Temperature-Dependent Electron Transport in Single Terphenyldithiol Molecules
Temperature-Dependent Electron Transport in Single Terphenyldithiol Molecules
Analyzing the electronic properties of individual terphenyldithiol (TPT) molecules in a temperature range of 30K-300K using cryogenic mechanically controllable break junctions, we observe an unexpected change of the transport mechanism with temperature for this linear and symmetric aromatic molecule...
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Personal Name(s): | Grellmann, T. |
---|---|
Mayer, D. / Offenhäusser, A. / Wördenweber, R. (Corresponding author) | |
Contributing Institute: |
JARA-FIT; JARA-FIT Bioelektronik; PGI-8 |
Published in: |
The @journal of physical chemistry |
Imprint: |
Washington, DC
Soc.
2017
|
DOI: |
10.1021/acs.jpca.7b00977 |
PubMed ID: |
28375607 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Publikationsportal JuSER |
Analyzing the electronic properties of individual terphenyldithiol (TPT) molecules in a temperature range of 30K-300K using cryogenic mechanically controllable break junctions, we observe an unexpected change of the transport mechanism with temperature for this linear and symmetric aromatic molecule. Whereas the work function (3.8eV) and molecular energy level (0.8 to 1eV depending on the analysis of the data) of TPT are temperature-independent, elastic tunneling dominates charge transport at low temperatures, whereby an inelastic transport (via hopping) sets in at about 100K. The molecular level of TPT lies around 1eV and is temperature-independent. This unusual temperature dependence agrees with recent predictions for other short molecules using density-functional-based transport studies as well as experimental observations obtained for similar relatively short rod-like molecules. |