22 citations · 109 across the 14 of their papers we have counts for
14 papers · 1 filter
Ultrafast Nonequilibrium Dynamics in Two-dimensional Quantum Spin-Hall Materials
Rajesh K. Malla, Dasol Kim, Dong Eon Kim +2
We develop the theoretical framework of nonequilibrium ultrafast photonics in monolayer quantum spin-Hall insulators supporting a multitude of topological states. In these material…
Landau-Zener transition between two levels coupled to continuum
Rajesh K. Malla, M. E. Raikh
For a Landau-Zener transition in a two-level system, the probability for a particle, initially in the first level, {\em i}, to survive the transition and to remain in the first lev…
Effect of decay of the final states on the probabilities of the Landau-Zener transitions in multistate non-integrable models
Rajesh K. Malla, M. E. Raikh
For a Landau-Zener transition in a two-level system, the probability for a particle, initially in the first level, to survive the transition and to remain in the first level, does…
Emerging nonlinear Hall effect in Kane-Mele two-dimensional topological insulators
Rajesh K. Malla, Avadh Saxena, Wilton J. M. Kort-Kamp
The recent observations of nonlinear Hall effect in time-reversal symmetry protected systems and on the surface of three-dimensional topological insulators due to an in-plane magne…
Nonlinear dynamics of topological Dirac fermions in 2D spin-orbit coupled materials
Rajesh K. Malla, Wilton J. M. Kort-Kamp
The graphene family materials are two-dimensional staggered monolayers with a gapped energy band structure due to intrinsic spin-orbit coupling. The mass gaps in these materials ca…
Nonadiabatic transitions in Landau-Zener grids: integrability and semiclassical theory
Rajesh K. Malla, Vladimir Y. Chernyak, Nikolai A. Sinitsyn
We demonstrate that the general model of a linearly time-dependent crossing of two energy bands is integrable. Namely, the Hamiltonian of this model has a quadratically time-depend…