23 citations · 50 across the 9 of their papers we have counts for
9 papers
Pre-Floquet states facilitating coherent subharmonic response of periodically driven many-body systems
Steffen Seligmann, Hamed Koochaki Kelardeh, Martin Holthaus
We demonstrate longtime coherent subharmonic motion of a many-boson system subjected to an external time-periodic driving force. The underlying mechanism is exemplified numerically…
Intense-pulse dynamics of massless Dirac electrons
Hamed Koochaki Kelardeh, Ulf Saalmann, Jan M. Rost
We identify and describe how intense short light pulses couple to massless Dirac fermions in two-dimensional systems. The ensuing excitation dynamics exhibits unusual scaling with…
Ultrafast and Strong-Field Physics in Graphene-Like Crystals: Bloch Band Topology and High-Harmonic Generation
Hamed Koochaki Kelardeh
The emerging possibilities to steer and control electronic motion on subcycle time scales with strong electric fields enable studying the nonperturbative optical response and Bloch…
Photoinduced Nonperturbative Valley Polarization in Graphene
Hamed Koochaki Kelardeh, Mohammadreza Eidi, Takashi Oka +1
We investigate a valleytronic device based on graphene with charge separation at different sublattices and correspondingly at nonequivalent valleys. We characterize the maximality…
Static coherent states method for investigating high-order harmonic generation in single-electron molecular systems
Mohammadreza Eidi, Mohsen Vafaee, Hamed Koochaki Kelardeh +1
In this report, a novel methodology based on the static coherent states approach is introduced with the capability of calculating various strong-field laser-induced nonlinearities…
Numerical Study of Kα X-ray Emission from Multi-layered Cold and Compressed Targets Irradiated by Ultrashort Laser Pulses
Hamed Koochaki Kelardeh, Mohammad Mahdieh
In this paper the generation of Kα X-ray produced by interaction of ultrashort laser pulses with metal targets has been studied numerically. Several targets were assumed to be irra…
Ultrafast field control of symmetry, reciprocity, and reversibility in buckled graphene-like materials
Hamed Koochaki Kelardeh, Vadym Apalkov, Mark I. Stockman
We theoretically show that buckled two-dimensional graphene-like materials (silicene and germanene) subjected to a femtosecond strong optical pulse can be controlled by the optical…
Wannier-Stark states of graphene monolayer in strong electric field
Hamed Koochaki Kelardeh, Vadym Apalkov, Mark I. Stockman
We find theoretically energy spectrum of a graphene monolayer in a strong constant electric field using a tight-binding model. Within a single band, we find quantized equidistant e…
Interaction of graphene monolayer with ultrashort laser pulse
Hamed Koochaki Kelardeh, Vadym Apalkov, Mark I. Stockman
We study the interaction of graphene with ultrashort few femtosecond long optical pulse. For such a short pulse, the electron dynamics is coherent and is described within the tight…