Surface state tunable energy and mass renormalization from homothetic quantum dot arrays.
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Abd El-Fattah, Zakaria M
Hirsch, Anna K H
Ortega, J Enrique
MetadataShow full item record
AbstractQuantum dot arrays in the form of molecular nanoporous networks are renowned for modifying the electronic surface properties through quantum confinement. Here we show that, compared to the pristine surface state, the band bottom of the confined states can exhibit downward shifts accompanied by a lowering of the effective masses simultaneous to the appearance of tiny gaps at the Brillouin zone boundaries. We observed these effects by angle resolved photoemission for two self-assembled homothetic (scalable) Co-coordinated metal-organic networks. Complementary scanning tunneling spectroscopy measurements confirmed these findings. Electron plane wave expansion simulations and density functional theory calculations provide insight into the nature of this phenomenon, which we assign to metal-organic overlayer-substrate interactions in the form of adatom-substrate hybridization. To date, the absence of the experimental band structure resulting from single metal adatom coordinated nanoporous networks has precluded the observation of the significant surface state renormalization reported here, which we infer to be general for low interacting and well-defined adatom arrays.
CitationNanoscale. 2019 Dec 28;11(48):23132-23138. doi: 10.1039/c9nr07365e. Epub 2019 Dec 3.
AffiliationHIPS, Helmholtz-Institut für Pharmazeutische Forschung Saarland, Universitätscampus E8.1 66123 Saarbrücken, Germany.
PublisherRoyal Society of Chemistry
The following license files are associated with this item:
- Creative Commons
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International
- Electron Transmission through Coordinating Atoms Embedded in Metal-Organic Nanoporous Networks.
- Authors: Piquero-Zulaica I, Sadeghi A, Kherelden M, Hua M, Liu J, Kuang G, Yan L, Ortega JE, El-Fattah ZMA, Azizi B, Lin N, Lobo-Checa J
- Issue date: 2019 Dec 31
- Tunable quantum dot arrays formed from self-assembled metal-organic networks.
- Authors: Klappenberger F, Kühne D, Krenner W, Silanes I, Arnau A, García de Abajo FJ, Klyatskaya S, Ruben M, Barth JV
- Issue date: 2011 Jan 14
- Quantum confinement in self-assembled two-dimensional nanoporous honeycomb networks at close-packed metal surfaces.
- Authors: Kepčija N, Huang TJ, Klappenberger F, Barth JV
- Issue date: 2015 Mar 14
- Near Fermi Superatom State Stabilized by Surface State Resonances in a Multiporous Molecular Network.
- Authors: Kawai S, Kher-Elden MA, Sadeghi A, Abd El-Fattah ZM, Sun K, Izumi S, Minakata S, Takeda Y, Lobo-Checa J
- Issue date: 2021 Aug 11
- Energy Dissipation from Confined States in Nanoporous Molecular Networks.
- Authors: D'Astolfo P, Wang X, Liu X, Kisiel M, Drechsel C, Baratoff A, Aschauer U, Decurtins S, Liu SX, Pawlak R, Meyer E
- Issue date: 2022 Oct 25