Quantum transport through STM-lifted single PTCDA molecules
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2008
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| _version_ | 1866913213423026176 |
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| author | Pump, Florian Temirov, Ruslan Neucheva, Olga Soubatch, Serguei Tautz, Stefan Rohlfing, Michael Cuniberti, Gianaurelio |
| author_facet | Pump, Florian Temirov, Ruslan Neucheva, Olga Soubatch, Serguei Tautz, Stefan Rohlfing, Michael Cuniberti, Gianaurelio |
| contents | Using a scanning tunneling microscope we have measured the quantum conductance through a PTCDA molecule for different configurations of the tip-molecule-surface junction. A peculiar conductance resonance arises at the Fermi level for certain tip to surface distances. We have relaxed the molecular junction coordinates and calculated transport by means of the Landauer/Keldysh approach. The zero bias transmission calculated for fixed tip positions in lateral dimensions but different tip substrate distances show a clear shift and sharpening of the molecular chemisorption level on increasing the STM-surface distance, in agreement with experiment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_0808_2600 |
| institution | arXiv |
| publishDate | 2008 |
| record_format | arxiv |
| spellingShingle | Quantum transport through STM-lifted single PTCDA molecules Pump, Florian Temirov, Ruslan Neucheva, Olga Soubatch, Serguei Tautz, Stefan Rohlfing, Michael Cuniberti, Gianaurelio Mesoscale and Nanoscale Physics Materials Science Using a scanning tunneling microscope we have measured the quantum conductance through a PTCDA molecule for different configurations of the tip-molecule-surface junction. A peculiar conductance resonance arises at the Fermi level for certain tip to surface distances. We have relaxed the molecular junction coordinates and calculated transport by means of the Landauer/Keldysh approach. The zero bias transmission calculated for fixed tip positions in lateral dimensions but different tip substrate distances show a clear shift and sharpening of the molecular chemisorption level on increasing the STM-surface distance, in agreement with experiment. |
| title | Quantum transport through STM-lifted single PTCDA molecules |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/0808.2600 |