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 ...

It hardly conducts any electricity at all, so we can say it’s an electrical insulator. Inside the plastic, all the electrons are tightly bound to the atoms, so the charges cannot move very far ...

The discovery of a dual topological insulator introduces a new method for creating topological flat minibands through electron interactions, which offer a promising platform for exploring exotic ...

This finding, published under the title "Long-range crossed Andreev reflection in topological insulator nanowires proximitized by a superconductor" in Nature Physics, deepens our understanding of ...

What is quantum physics? Put simply ... don’t move through a solid material and so make a material a metal, an insulator or a semiconductor, for example – things get even more complex.

More information: Junya Feng et al, Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by ...

A RIKEN study shows that squeezing the right amount of potassium ions between the atomic layers of molybdenum disulfide can turn it from a semiconductor into a metal, superconductor or insulator.