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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Stadtmüller, Benjamin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Coherent and incoherent magnons induced by strong ultrafast demagnetization in thin permalloy filmscitations
- 2024Revealing hidden spin polarization in centrosymmetric van der Waals materials on ultrafast timescalescitations
- 2024Enhancing the dipole ring of hexagonal boron nitride nanomesh by surface alloyingcitations
- 2023Effect of iron thicknesses on spin transport in a Fe/Au bilayer system
- 2022Atomic and mesoscopic structure of Dy-based surface alloys on noble metalscitations
- 2021Energy and momentum distribution of surface plasmon-induced hot carriers isolated via spatiotemporal separationcitations
- 2020Vertical bonding distances and interfacial band structure of PTCDA on a Sn-Ag surface alloycitations
- 2020Modification of the charge and magnetic order of a low dimensional ferromagnet by molecule-surface bonding
- 2019Exchange Splitting of a Hybrid Surface State and Ferromagnetic Order in a 2D Surface Alloy
- 2018Adsorption-induced pyramidal distortion of the trimetallic nitride core inside the endohedral fullerene Sc3N@C80 on the Ag(111) surfacecitations
- 2018Adsorption-induced pyramidal distortion of the trimetallic nitride core inside the endohedral fullerene Sc 3 N @ C 80 on the Ag(111) surfacecitations
- 2017Fully Atomistic Understanding of the Electronic and Optical Properties of a Prototypical Doped Charge-Transfer Interfacecitations
- 2017Fully atomistic understanding of the electronic and optical properties of a prototypical doped charge-transfer interfacecitations
- 2016Epitaxial growth of thermally stable cobalt films on Au(111)citations
- 2016Adsorption heights and bonding strength of organic molecules on a Pb-Ag surface alloycitations
- 2015Topological states on the gold surfacecitations
- 2015Tailoring metal–organic hybrid interfaces: heteromolecular structures with varying stoichiometry on Ag(111)citations
- 2015Tailoring metal–organic hybrid interfaces: heteromolecular structures with varying stoichiometry on Ag(111)citations
- 2014Molecular exchange in a heteromolecular PTCDA/CuPc bilayer film on Ag(111)citations
- 2014Electrostatic interaction and commensurate registry at the heteromolecular F16CuPc–CuPc interfacecitations
- 2010Structural influence on the Rashba-type spin splitting in surface alloyscitations
- 2010Submonolayer growth of copper-phthalocyanine on Ag(111)citations
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article
Fully Atomistic Understanding of the Electronic and Optical Properties of a Prototypical Doped Charge-Transfer Interface
Abstract
<p>The current study generates profound atomistic insights into doping-induced changes of the optical and electronic properties of the prototypical PTCDA/Ag(111) interface. For doping K atoms are used, as K<sub>x</sub>PTCDA/Ag(111) has the distinct advantage of forming well-defined stoichiometric phases. To arrive at a conclusive, unambiguous, and fully atomistic understanding of the interface properties, we combine state-of-the-art density-functional theory calculations with optical differential reflectance data, photoelectron spectra, and X-ray standing wave measurements. In combination with the full structural characterization of the K<sub>x</sub>PTCDA/Ag(111) interface by low-energy electron diffraction and scanning tunneling microscopy experiments (ACS Nano 2016, 10, 2365-2374), the present comprehensive study provides access to a fully characterized reference system for a well-defined metal-organic interface in the presence of dopant atoms, which can serve as an ideal benchmark for future research and applications. The combination of the employed complementary techniques allows us to understand the peculiarities of the optical spectra of K<sub>2</sub>PTCDA/Ag(111) and their counterintuitive similarity to those of neutral PTCDA layers. They also clearly describe the transition from a metallic character of the (pristine) adsorbed PTCDA layer on Ag(111) to a semiconducting state upon doping, which is the opposite of the effect (degenerate) doping usually has on semiconducting materials. All experimental and theoretical efforts also unanimously reveal a reduced electronic coupling between the adsorbate and the substrate, which goes hand in hand with an increasing adsorption distance of the PTCDA molecules caused by a bending of their carboxylic oxygens away from the substrate and toward the potassium atoms.</p>