A group of researchers from the University of São Paulo (USP) has made a significant discovery that challenges an old rule in material physics. The study revealed that, contrary to previous beliefs, electron collisions play a crucial role in the electrical resistivity of two-dimensional systems, like graphene and the quantum well of Mercury Telluride.
The article, titled "Resistivity of Non-Galilean-Invariant Two-Dimensional Dirac Systems", could transform our understanding of electron flow in these materials. This new perspective opens the way for advances in nanotechnology, quantum computing, and future electronics.
Gennady Gusev, professor at FMT/IFUSP and coauthor of the study, states: “There is a ‘new rule of the game’ that needs to be considered in the construction of new electronic devices.” The study was conducted in collaboration with the Institute of Semiconductor Physics and Novosibirsk State Technical University in Russia, along with professors Alexandre Levine and Valmir Chitta from FMT/IFUSP.