Topological insulators are materials that are insulating in their interior but can support the flow of electrons on their surface. The underlying cause is time-reversal symmetry: their physics is ...
This invariant is insensitive to small changes in the band structure, and can only change at a phase transition where the energy gap vanishes. A distinctive property of topological insulators is ...
Western Power is using helicopters to boost insulator resilience across the network this summer, with about 13,000 poles throughout the Wheatbelt and Great Southern to be treated by live washing and ...