The spin structure in the atoms in the crystal made of light - it is possible to switch between simple and complex states.
[ Florian Aigner - "Topological materials" are very interesting for technology, but difficult to study. TU Wien (Vienna) and the University of Science and Technology in China are presenting new approaches. Electrons are not just little spheres, bouncing through a material like a rubber ball. The laws of quantum physics tell us that electrons behave like waves. In some materials, these electron waves can take on rather complicated shapes. The so-called "topological materials" produce electron states that can be very interesting for technical applications, but it is extremely difficult to identify these materials and their associated electronic states. TU Wien (Vienna) and several research groups from China have now developed new ideas and implemented them in an experiment.
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