An international team, headed by the University of Geneva (UNIGE), has created a quantum material that allows the fabric of the space inhabited by electrons to be curved on demand. The advent of cutting-edge information and communication technologies presents scientists and industry with new hurd
Artistic view. Curvature of the space fabric due to the superposition of spin and orbital states at the interface between lanthanum aluminate and strontium titanate . Credit: Xavier Ravinet – UNIGE
The advent of cutting-edge information and communication technologies presents scientists and industry with new hurdles to overcome. To address these challenges, designing new quantum materials, which derive their remarkable characteristics from the principles of quantum physics, is the most promising approach.
Thanks to their unique properties – especially the collective reactions of the electrons that compose them – these quantum materials could be used to capture, manipulate and transmit information-carrying signals within new electronic devices. Moreover, they can operate in electromagnetic frequency ranges that have not yet been explored and would thus open the way to very high-speed communication systems.
‘‘We have designed an interface hosting an extremely thin layer of free electrons. It is sandwiched between strontium titanate and lanthanum aluminate, which are two insulating oxides,’’ says Carmine Ortix, professor at the University of Salerno and coordinator of the theoretical study. This combination allows us to obtain particular electronic geometrical configurations which can be controlled on-demand.
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