Weyl semimetals are highly sought after by material scientists. First predicted in the early 2010s, they belong to the class of topological materials that owe their unique transport, optical and thermoelectric behavior to distinct geometric and topological features, rather than to their chemical composition. What sets Weyl semimetals apart is that their electrons behave as if they are massless due to the presence of nodes in the electronic band structure, leading to unusual and interesting properties.
