Our theoretical understanding of the way in which metals conduct electricity is incomplete. The current taxonomy appears to be too blurry and contains too many exceptions to be convincing. This is the conclusion that materials scientists from the University of Groningen reached after thoroughly examining the recent literature on metals. They analyzed more than 30 metals and show that a simple formula can provide a classification of metals in a more systematic manner. Their analysis was published in Physical Review B on 29 August.
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Source: Phys.org