Condensed matter physics; computational materials modeling

1. Density-functional theory and materials modeling

2. Berry phase of Bloch bands: topological states;valleytronics

3. Correlation effects: magnetic order; electron-phonon coupling; charge-density wave

4. Elastic strain: charge carrier dynamics; orbital effects; molecular dynamics

5. Materials of interest: chalcogenides; topological materials; graphene; complex oxides; multiferroics