Researchers find path to discovering new topological materials, holding promise for technological applications.
An international team of researchers has found a way to determine whether a crystal is a topological insulator — and to predict crystal structures and chemical compositions in which new ones can arise. The results, published July 20 in the journal Nature, show that topological insulators are much more common in nature than currently believed.
Scientists from the Max Planck Institute for chemical Physics of solids in Dresden discovered a system where a charge order can be continuously tuned to T = 0 by chemical substitution. Surprisingly, they observed a strong enhancement of superconductivity just at the quantum critical point where the charge order disappears. This opens a new window for studying the relation between superconductivity and critical fluctuations at quantum critical points.
In a collaboration between the Fritz Haber Institute in Berlin and the department Chemical Metals Science at MPI CPfS, defect concentrations in clathrate networks and the existence of high temperature phases have been predicted theoretically.