Publications
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Quantum dot acceptors in two-dimensional epitaxially fused PbSe quantum dot superlattices Ghent University
Comparison between Si/SiO2 mid-gap interface states and deep levels associated with silicon-oxygen superlattices in p-type silicon Ghent University
Low-strain Si/O superlattices with tunable electronic properties: Ab initio calculations KU Leuven University of Antwerp
We propose that low-strain Si/O superlattices can be constructed by connecting reconstructed Si{001} surfaces by Si-O-Si bridges. Ab initio calculations show that our models are energetically more favorable than all the models proposed so far. The part of our Si/O superlattice model is experimentally accessible just by oxidizing a Si(001) substrate. To complete our Si/O superlattice model, we propose a three-step method. We also explore the ...
Quasi 2D Si-O Superlattices for Future Nanoelectronic Applications KU Leuven
Graphite-like 2D nanolattices of dielectrics andsemiconductors with enhanced anisotropic electronic properties are goodcandidates to pave the way to the ultimate scaling and performances of future nanoelectronic devices. Graphene, the most studied representativeof the 2D graphitic materials, has overshadowed research on other potential quasi-2D nanolattices with totally unexplored physical properties. For instance, 3D materials, in which strong ...
Correlation of Interface Impurities and Chemical Gradients with High Magnetoelectric Coupling Strength in Multiferroic BiFeO3-BaTiO3 Superlattices KU Leuven
The detailed understanding of magnetoelectric (ME) coupling in multiferroic oxide heterostructures is still a challenge. In particular, very little is known to date concerning the impact of the chemical interface structure and unwanted impurities that may be buried within short-period multiferroic BiFeO3-BaTiO3 superlattices during growth. Here, we demonstrate how trace impurities and elemental concentration gradients contribute to high ME ...
Synergy of atom-probe structural data and quantum-mechanical calculations in a theory-guided design of extreme-stiffness superlattices containing metastable phases KU Leuven
© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. A theory-guided materials design of nano-scaled superlattices containing metastable phases is critically important for future development of advanced lamellar composites with application-dictated stiffness and hardness. Our study combining theoretical and experimental methods exemplifies the strength of this approach for the case of the elastic properties of AlN/CrN superlattices ...
Chemical vapor deposition processes for the fabrication of epitaxial Si-O superlattices KU Leuven
Band engineered Si/O superlattices are promising channel materials for ultimately scaled complementary metal oxide semiconductor devices. Theoretical calculations have indicated that insertion of O monolayers into Si lattice creates anisotropy in the Si band structure with an enhanced carrier mobility in the channel direction. However, the experimental demonstration of such superlattices is not straightforward, as it requires processes for the ...