Phases of matter with the same symmetry may nevertheless be distinct. If a phase of matter has an energy gap that prevents excitations, and is distinct from a solid of weakly-bound atoms, we say that this phase of matter is a topological insulator. I will introduce the theory for a topological insulator with a symmetry commonly found in crystals, and describe the subsequent experimental discovery in the compound KHgSb.
Graduate Lunch Talk: Aris Alexandradinata, Yale Physics, “Topological insulators”
Thursday, December 1, 2016 - 12:00pm to 1:00pm
Sloane Physics Laboratory (SPL), 3rd Floor Lounge(Location is wheelchair accessible)
217 Prospect St.New Haven, CT 06511
Yale Community Only