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4 papers · 2 filters
Trapping photon-dressed Dirac electrons in a quantum dot studied by coherent two dimensional photon echo spectroscopy
O. Roslyak, G. Gumbs, S. Mukamel
We study the localization of dressed Dirac electrons in a cylindrical quantum dot (QD) formed on monolayer and bilayer graphene by spatially different potential profiles. Short liv…
Anomalous Photon-Assisted Tunneling in Graphene
Andrii Iurov, Godfrey Gumbs, Oleksiy Roslyak +1
We investigated the Dirac electrons transmission through a potential barrier in the presence of circularly polarized light. An anomalous photon-assisted enhanced transmission is pr…
Spectroscopic Characterization of Gapped Graphene in the Presence of Circularly Polarized Light
Godfrey Gumbs, O. Roslyak, Danhong Huang +1
We present a description of the energy loss of a charged particle moving parallel to a graphene layer and graphene double layers. Specifically, we compare the stopping power of the…
Plasma excitations of dressed Dirac electrons in graphene layers
Oleksiy Roslyak, Godfrey Gumbs, Danhong Huang
The dispersion relation for the collective plasma excitations of optically dressed Dirac electrons in single and double graphene layers is calculated in the random-phase approximat…