Fano effect in the transport of an artificial molecule
| Autor: | Shota Norimoto, Koji Onomitsu, Shuji Nakamura, Kenichi Asano, Kensuke Kobayashi, Yuma Okazaki, Tomonori Arakawa, Nobu-Hisa Kaneko |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Mesoscopic physics Fano resonance Honeycomb (geometry) 02 engineering and technology Fano plane Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Coupling (physics) Honeycomb structure Quantum dot 0103 physical sciences 010306 general physics 0210 nano-technology Fermi gas |
| Zdroj: | Physical Review B. 97 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | The Fano effect is a ubiquitous phenomenon arising from interference between a discrete energy state and an energy continuum. We explore this effect in an artificial molecule, namely, two lateral quantum dots (QDs) fabricated from a two-dimensional electron gas system and coupled in series. When the coupling between the leads and QDs is small, the charge stability diagram of the system shows a honeycomb lattice structure that is characteristic of a double QD system. As the coupling increases, a honeycomb structure consisting of the Fano resonances emerges. A numerical simulation based on the T-matrix method can satisfactorily reproduce our experimental observation. This report constitutes a clear example of the ubiquitous nature of the Fano effect in mesoscopic transport. |
| Databáze: | OpenAIRE |
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