Welcome to the topological matter theory research group at Columbia University. We investigate quantum phenomena of condensed matter systems and are fascinated with symmetry and topology. We explore how topology crucially influences fundamental characteristics of solid-state materials.


September 15, 2022

Welcome Nish!

Nishchhal Verma join us as a postdoc. Nish is interested in the interplay between topology and superconductivity in quantum materials, among many other things. We are delighted to have you join the team, Nish!

September 15, 2022

We are hiring!

Jointly with Prof. Andrew Millis the topological matter group is searching for a new postdoctoral scientist interested in topological and strongly correlated properties of moire heterostructures. Don't hesitate to contact me if you are interested or know of any interested candidates.

Applications are encouraged to arrive before September 30.

Featured Publications

Research Projects

Classification of topological matter

Topological phases appear in many forms and shapes. We strive for a exhaustive understanding of the topology of condensed matter systems, studying novel phases, novel invariants and boundary signatures.

Disordered topological matter

Dirt and impurities are unavoidable in real physical systems. They break translation symmetry and invalidate Bloch's theorem. But can we still find order in disorder? Are there topological invariants that subside these harsh conditions?