Experiment has now proved the existence of the predicted three-dimensional 'topological insulator' in the semiconducting alloy Bi 1−x Sb x. One of the triumphs of quantum mechanics in the ...

These materials are known as electrical insulators. Make a list of all of the objects that you can see in the room. Separate these objects into conductors and insulators. Explain how you know if a ...

Mott insulators are a unique class of materials that defy conventional band theories of solids. Though they are expected to conduct electricity, they exhibit insulating properties, particularly at low ...

Electric charges on the boundaries of certain insulators are programmed by topology ... topological invariants — that do not change when objects are subjected to continuous deformations.