Insulators such as plastic or rubber are used ... Although most non-metals are poor conductors, graphite is an example of a non-metal which is a good electrical conductor. The centre of most ...

Although theoretically conductive, these materials thus behave as electrical insulators. Vanadium sesquioxide, V 2 O 3, is a classic example of a Mott insulator. When cooled, it exhibits a ...

It is difficult to reconcile these observations with a transcriptional insulator model. For example, a reasonable prediction from the decoy model is that two insulators would be better than one.

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 ...