Demonstration of broken adiabaticity at the Dirac semi-metallic state at a transition from normal to topological insulating states, and developing a model to explain the observed Raman anomalies serving as bulk signature of the transition.
Prediction of strain-induced topological insulating state of As2Te3, and proposing its application as a charge pump.
Demonstration of surface multiferroic behavior in elemental Se as a consequence of its electronic topology and chirality.
