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https://hdl.handle.net/1822/78404
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Campo DC | Valor | Idioma |
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dc.contributor.author | Moreira, A. C. L. | por |
dc.contributor.author | Marques, L. | por |
dc.date.accessioned | 2022-06-15T08:17:43Z | - |
dc.date.available | 2022-06-15T08:17:43Z | - |
dc.date.issued | 2021-03-27 | - |
dc.identifier.issn | 0921-4526 | por |
dc.identifier.uri | https://hdl.handle.net/1822/78404 | - |
dc.description.abstract | In this work a theoretical study of the charge transport through a nanostructure composed by a double quantum dot was made by treating the system in two different ways: as single junction (SJ) within the scanning tunneling microscopy theory and a double junction (DJ) within the usual non equilibrium Green's function theory approach. In the first case (SJ), the three blocks - contact-device-contact - is treated as a single junction by 'breaking' the nanostructure into two parts and considering each one as belonging to an 'extended contact'. In the DJ case, the usual treatment with two contacts-related broadening and the exact Green's function describing the propagation inside the system was made. Proceeding in this way, for a minimum two-level model system, we show that the results obtained with the SJ and DJ treatment are identical despite they start with a different general formulae for transmission. Finally, both treatments were used with a minimal model for a biphenyl system in an asymmetric sample-biphenyl-tip configuration and analyzed in terms of a SJ point of view bringing another perspective to the main features of this system. | por |
dc.description.sponsorship | This research was carried out with financial support from Federal University of Pernambuco (Brazil) . L. Marques acknowledges the financial support of the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UIDB/04650/2020 and project SATRAP (POCI010145FEDER028108) . | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04650%2F2020/PT | por |
dc.relation | POCI010145FEDER028108 | por |
dc.rights | openAccess | por |
dc.subject | Molecular electronics | por |
dc.subject | Quantum transport | por |
dc.subject | STM-Theory | por |
dc.title | Double versus single junction: from tunneling to contact regime in a double quantum dot molecule system | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0921452621001757?via%3Dihub | por |
oaire.citationStartPage | 1 | por |
oaire.citationEndPage | 9 | por |
oaire.citationVolume | 613 | por |
dc.date.updated | 2022-06-14T17:12:09Z | - |
dc.identifier.doi | 10.1016/j.physb.2021.412976 | por |
dc.subject.wos | Science & Technology | - |
sdum.export.identifier | 12259 | - |
sdum.journal | Physica B: Condensed Matter | por |
dc.identifier.articlenumber | 412976 | por |
Aparece nas coleções: | CDF - FCT - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Double versus Single junction approaches for nanoscale transport.pdf | 1,19 MB | Adobe PDF | Ver/Abrir |