Topological material shows superconductivity--and not just at its surface

The special properties of topological materials typically occur at their surface. These materials, for example insulators that do conduct current at their surface, are expected to play a major role in future quantum computers. Scientists of the University of Twente and the University of Amsterdam now demonstrate a new property: the non-superconducting material bismuth shows lossless current conduction. What's even more special: it doesn't just occur at the surface but on the inside of the materi...