These are materials in which the electronic band structure shows degeneracy points that behave like massless fermions. Dirac and Weyl semimetals are examples of topological materials that have attracted a lot of attention in recent years.
These are materials in which the electronic band structure shows degeneracy points that behave like massless fermions. Dirac and Weyl semimetals are examples of topological materials that have attracted a lot of attention in recent years.