Electrical control of the light absorption in quantum-well functionalized junctions between thin metallic films

We use a time-dependent density functional theory approach to study the optical response of a hybrid nanostructure where the junction between thin metallic films is functionalized with a quantum well (QW) structure. We show that an unoccupied QW-localized electronic state opens the possibility of th...

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Bibliographic Details
Published in:Physical review. B 2017-12, Vol.96 (24), Article 245407
Main Authors: Marinica, Dana Codruta, Kazansky, Andrey K., Borisov, Andrei G.
Format: Article
Language:English
Subjects:
Active control
Density functional theory
Electrical junctions
Electromagnetic absorption
Electron states
Electron transport
Metal films
Quantum wells
Thin films
Time dependence
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Summary:We use a time-dependent density functional theory approach to study the optical response of a hybrid nanostructure where the junction between thin metallic films is functionalized with a quantum well (QW) structure. We show that an unoccupied QW-localized electronic state opens the possibility of the active electrical control of the photoassisted electron transport through the junction and of the absorption at optical frequencies. Control strategies based on an applied bias or an external THz field are demonstrated.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.96.245407