Transport through an AC-driven impurity: Fano interference and bound states in the continuum
Using the Floquet formalism we study transport through an AC-driven impurity in a tight binding chain. The results obtained are exact and valid for all frequencies and barrier amplitudes. At frequencies comparable to the bulk bandwidth we observe a breakdown of the transmission T = 0 which is relat...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa66fe |
| _version_ | 1797750756807278592 |
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| author | Sebastián A Reyes Daniel Thuberg Daniel Pérez Christoph Dauer Sebastian Eggert |
| author_facet | Sebastián A Reyes Daniel Thuberg Daniel Pérez Christoph Dauer Sebastian Eggert |
| author_sort | Sebastián A Reyes |
| collection | DOAJ |
| description | Using the Floquet formalism we study transport through an AC-driven impurity in a tight binding chain. The results obtained are exact and valid for all frequencies and barrier amplitudes. At frequencies comparable to the bulk bandwidth we observe a breakdown of the transmission T = 0 which is related to the phenomenon of Fano resonances associated to AC-driven bound states in the continuum. We also demonstrate that the location and width of these resonances can be modified by tuning the frequency and amplitude of the driving field. At high frequencies there is a close relation between the resonances and the phenomenon of coherent destruction of tunneling. As the frequency is lowered no more resonances are possible below a critical value and the results approach a simple time average of the static transmission. |
| first_indexed | 2024-03-12T16:38:33Z |
| format | Article |
| id | doaj.art-710862a2208b457282f737661d7ee215 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:38:33Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-710862a2208b457282f737661d7ee2152023-08-08T14:38:50ZengIOP PublishingNew Journal of Physics1367-26302017-01-0119404302910.1088/1367-2630/aa66feTransport through an AC-driven impurity: Fano interference and bound states in the continuumSebastián A Reyes0Daniel Thuberg1Daniel Pérez2Christoph Dauer3Sebastian Eggert4Instituto de Física and Centro de Investigación en Nanotecnología y Materiales Avanzados, Pontificia Universidad Católica de Chile , Casilla 306, Santiago 22, ChileInstituto de Física and Centro de Investigación en Nanotecnología y Materiales Avanzados, Pontificia Universidad Católica de Chile , Casilla 306, Santiago 22, ChileInstituto de Física and Centro de Investigación en Nanotecnología y Materiales Avanzados, Pontificia Universidad Católica de Chile , Casilla 306, Santiago 22, ChilePhysics Department and Research Center OPTIMAS, University of Kaiserslautern , D-67663 Kaiserslautern, GermanyPhysics Department and Research Center OPTIMAS, University of Kaiserslautern , D-67663 Kaiserslautern, GermanyUsing the Floquet formalism we study transport through an AC-driven impurity in a tight binding chain. The results obtained are exact and valid for all frequencies and barrier amplitudes. At frequencies comparable to the bulk bandwidth we observe a breakdown of the transmission T = 0 which is related to the phenomenon of Fano resonances associated to AC-driven bound states in the continuum. We also demonstrate that the location and width of these resonances can be modified by tuning the frequency and amplitude of the driving field. At high frequencies there is a close relation between the resonances and the phenomenon of coherent destruction of tunneling. As the frequency is lowered no more resonances are possible below a critical value and the results approach a simple time average of the static transmission.https://doi.org/10.1088/1367-2630/aa66fetransport propertiesdriven systemsimpurities |
| spellingShingle | Sebastián A Reyes Daniel Thuberg Daniel Pérez Christoph Dauer Sebastian Eggert Transport through an AC-driven impurity: Fano interference and bound states in the continuum New Journal of Physics transport properties driven systems impurities |
| title | Transport through an AC-driven impurity: Fano interference and bound states in the continuum |
| title_full | Transport through an AC-driven impurity: Fano interference and bound states in the continuum |
| title_fullStr | Transport through an AC-driven impurity: Fano interference and bound states in the continuum |
| title_full_unstemmed | Transport through an AC-driven impurity: Fano interference and bound states in the continuum |
| title_short | Transport through an AC-driven impurity: Fano interference and bound states in the continuum |
| title_sort | transport through an ac driven impurity fano interference and bound states in the continuum |
| topic | transport properties driven systems impurities |
| url | https://doi.org/10.1088/1367-2630/aa66fe |
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