Red alert zero uncertainty principle9/6/2023 Researchers from the Moscow Institute of Physics and Technology and Tohoku University (Japan) have explained the puzzling phenomenon of particle-antiparticle annihilation in graphene, recognized by specialists as Auger recombination. For a long time, the Auger process was considered to be impossible in graphene due to the energy and momentum conservation laws. The Auger process is harmful for semiconductor lasers, because it consumes the energy that could be used to produce laser light. In Auger recombination (right), this energy is picked up by an electron passing by. In radiative recombination (left), the mutual annihilation of an electron and a hole, shown as blue and red spheres respectively, frees energy in the form of a photon, a portion of light. Image: Two scenarios of electron-hole recombination in graphene.
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