One type of these materials has robust edge state which in two dimensions are quantum spin Hall states.
One type of these materials has robust edge state which in two dimensions are quantum spin Hall states. A strongly correlated example of these materials is samarium hexaboride, while other examples often involved bismuth. Strong interactions between bonding and anti-bonding orbitals make diamond a very good one of these materials. One class of these (*) materials exhibit their characteristic behavior in their interior but not on their surface. The Fermi surface of these materials is between bands and they are characterized by a large band gap. They allow current to pass above their breakdown voltage. For 10 points, name these materials which don't allow current to pass, unlike conductors.
One type of these materials has robust edge state which in two dimensions are quantum spin Hall states.
topological insulators 