The LRSM topological insulator (TI) seed is investigating how the connectivity of electronic bands in momentum space can be used to topologically classify insulators and semimetals. The theory of topological band structures has been generalized beyond TIs to include topological semimetals, including Weyl semimetals, Dirac semimetals and other symmetry protected topological states.
The seed has focused on the three dimensional Dirac semimetal, a novel gapless material that is intermediate between a TI and an ordinary insulator. This state has electronic structure similar to graphene but in all 3 dimensions, acting as though the excited carriers are massless.
We have invented new materials that can offer these massless states, leading the way to new high-mobility electronics.