Topological Insulators Found In Nature

Looks like Mother Nature knows how to cook these things way before many of us know about it. Newly-found samples of kawazulite found in gold mines in the Czech Republic shows properties of being a topological insulator , and may in fact have a higher quality than made-made ones. In search of materials that display these properties, Gehring and his colleagues examined a natural sample of kawazulite, which contains bismuth, tellurium, selenium and sulphur, found at a former gold mine in the Cze