Publications by authors named "Henk Stoof"
Article Synopsis
- Colloidal nanocrystals have advanced in size and surface properties, leading to potential applications in optoelectronics and quantum materials.
- The study focuses on two-dimensional BiSe crystals with controlled thickness, exploring the transition of a topological insulator as it shifts from three to two dimensions.
- Results reveal an 8 nm wide edge state around specific BiSe structures and discuss its characteristics using advanced theoretical models, also suggesting the possible state density for future devices.
We analyze the topology, dispersion, and optical selection rules of bulk Wannier excitons in nanosheets of BiSe, a topological insulator in the family of the bismuth chalcogenides. Our main finding is that excitons also inherit the topology of the electronic bands, quantified by the skyrmion winding numbers of the constituent electron and hole pseudospins as a function of the total exciton momentum. The excitonic bands are found to be strongly indirect due to the band inversion of the underlying single-particle model.
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- The study focuses on how photoexcited electronic states relax in CdSe nanoplatelets (NPLs) using ultrafast transient optical absorption measurements.
- The researchers explored the behavior and interactions of various excitonic states, charge carriers, and how photon energy influences these processes.
- Key findings include that thermal relaxation happens within 1 picosecond, while trions form under specific conditions, and the presence of biexcitons is limited to interactions between different excitons.
Network structure has often proven to be important in understanding the decision behavior of individuals or agents in different interdependent situations. Computational studies predict that network structure has a crucial influence on behavior in iterated 2 by 2 asymmetric 'battle of the sexes' games. We test such behavioral predictions in an experiment with 240 human subjects.
View Article and Find Full Text PDFNetwork structure can have an important effect on the behavior of players in an iterated 2 × 2 game. We study the effect of network structure on global and local behavior in asymmetric coordination games using best response dynamics. We find that global behavior is highly dependent on network topology.
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