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Cano and Collaborators Create Framework to Design Topological Materials

Dr. Cano and collaborators worldwide have developed a method that predicts whether metallic materials are likely to have the kinds of strong electron interactions that lead to topological states.

evan trommer

A figure from the published paper, detailing the design process (a, b), the strengths of potential materials (c), and characteristics of the first created material (d, e).

"Since we developed the theory of topological quantum chemistry, it has been a longstanding goal to apply the formalism to strongly correlated materials. Our work is the first step in that direction."

- Dr. Cano

The framework's development used a key feature of crystalline structures: symmetry. Using symmetry arguments, certain behaviors can be deduced without resorting to expensive calculations.

"What we postulated was that strongly correlated excitations are still subject to symmetry requirements. Because of that, I can say a lot about the topology of a system without resorting to ab initio calculations that are often required but are particularly challenging for studying strongly correlated materials."

- Dr. Si, collaborator

An interview article published by the university may be found here. The article, published online in Nature Physics, may be found here.

Read more here.