Vibrational effects in charge transport through a molecular double quantum dot
Recent progress in the field of molecular electronics has revealed the fundamental importance of the coupling between the electronic degrees of freedom and specific vibrational modes. Considering the examples of a molecular dimer and a carbon nanotube double quantum dot, we here theoretically invest...
| Príomhchruthaitheoirí: | , , , |
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| Formáid: | Journal article |
| Foilsithe / Cruthaithe: |
American Physical Society
2017
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| _version_ | 1826276200403697664 |
|---|---|
| author | Sowa, J Mol, J Briggs, G Gauger, E |
| author_facet | Sowa, J Mol, J Briggs, G Gauger, E |
| author_sort | Sowa, J |
| collection | OXFORD |
| description | Recent progress in the field of molecular electronics has revealed the fundamental importance of the coupling between the electronic degrees of freedom and specific vibrational modes. Considering the examples of a molecular dimer and a carbon nanotube double quantum dot, we here theoretically investigate transport through a two-site system that is strongly coupled to a single vibrational mode. Using a quantum master equation approach, we demonstrate that, depending on the relative positions of the two dots, electron-phonon interactions can lead to negative differential conductance and suppression of the current through the system. We also discuss the experimental relevance of the presented results and possible implementations of the studied system. |
| first_indexed | 2024-03-06T23:10:27Z |
| format | Journal article |
| id | oxford-uuid:65486074-8d88-46bf-8edd-f445daae19f5 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:10:27Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:65486074-8d88-46bf-8edd-f445daae19f52022-03-26T18:24:31ZVibrational effects in charge transport through a molecular double quantum dotJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:65486074-8d88-46bf-8edd-f445daae19f5Symplectic Elements at OxfordAmerican Physical Society2017Sowa, JMol, JBriggs, GGauger, ERecent progress in the field of molecular electronics has revealed the fundamental importance of the coupling between the electronic degrees of freedom and specific vibrational modes. Considering the examples of a molecular dimer and a carbon nanotube double quantum dot, we here theoretically investigate transport through a two-site system that is strongly coupled to a single vibrational mode. Using a quantum master equation approach, we demonstrate that, depending on the relative positions of the two dots, electron-phonon interactions can lead to negative differential conductance and suppression of the current through the system. We also discuss the experimental relevance of the presented results and possible implementations of the studied system. |
| spellingShingle | Sowa, J Mol, J Briggs, G Gauger, E Vibrational effects in charge transport through a molecular double quantum dot |
| title | Vibrational effects in charge transport through a molecular double
quantum dot |
| title_full | Vibrational effects in charge transport through a molecular double
quantum dot |
| title_fullStr | Vibrational effects in charge transport through a molecular double
quantum dot |
| title_full_unstemmed | Vibrational effects in charge transport through a molecular double
quantum dot |
| title_short | Vibrational effects in charge transport through a molecular double
quantum dot |
| title_sort | vibrational effects in charge transport through a molecular double quantum dot |
| work_keys_str_mv | AT sowaj vibrationaleffectsinchargetransportthroughamoleculardoublequantumdot AT molj vibrationaleffectsinchargetransportthroughamoleculardoublequantumdot AT briggsg vibrationaleffectsinchargetransportthroughamoleculardoublequantumdot AT gaugere vibrationaleffectsinchargetransportthroughamoleculardoublequantumdot |