Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Roslyak, Oleksiy"'
It is now well established that a high-frequency electromagnetic dressing field within the off-resonance regime significantly modifies the electronic transport and optical properties on Dirac materials. Here, using light with circular polarization, w
Externí odkaz:
http://arxiv.org/abs/2312.16825
In the presence of an external vertical electric field and strain, it is evident that 1T${^\prime}$-MoS$_2$ exhibits tilted Dirac bands which are valley-spin-polarized. Additionally, this material experiences a topological phase change between a topo
Externí odkaz:
http://arxiv.org/abs/2205.03717
We report on theoretical study of second-harmonic generation (SHG) in plasmonic nanostructures interacting with two-level quantum emitters (QE) under incoherent energy pump. We generalize driven-dissipative Tavis-Cummings model by introducing anharmo
Externí odkaz:
http://arxiv.org/abs/2011.07162
The interaction energy for the indirect-exchange or Ruderman-Kittel-Kasuva-Yosida (RKKY) interaction between magnetic spins localized on lattice sites of the $\alpha$-${\cal T}_3$ model is calculated using linear response theory. In this model, the $
Externí odkaz:
http://arxiv.org/abs/2006.15447
Publikováno v:
Phys. Rev. Research 2, 013141 (2020)
Hybrid photonic-plasmonic nanostructures allow one to engineer coupling of quantum emitters and cavity modes accounting for the direct coherent and environment mediated dissipative pathways. Using generalized plasmonic Dicke model, we explore the non
Externí odkaz:
http://arxiv.org/abs/1909.01619
Autor:
Balassis, Antonios, Dahal, Dipendra, Gumbs, Godfrey, Iurov, Andrii, Huang, Danhong, Roslyak, Oleksiy
Publikováno v:
Phys. Rev. B 103, 075418 (2021)
Using the $\alpha$-T$_3$ model, we carried out analytical and numerical calculations for the static and dynamic polarization functions in the presence of a perpendicular magnetic field. These results were employed to determine the longitudinal dielec
Externí odkaz:
http://arxiv.org/abs/1905.04387
Autor:
Roslyak, Oleksiy, Piryatinski, Andrei
We develop a theoretical background to treat exciton states of semiconductor single-walled carbon nanotubes (SWCNTs) in presence of a periodic potential induced by the surface acoustic wave (SAW) propagating along semiconducting SWCNT. The formalism
Externí odkaz:
http://arxiv.org/abs/1604.00079
Autor:
Roslyak, Oleksiy, Piryatinski, Andrei
To examine thermoelectric (TE) properties of a semiconductor nanowire (NW) network, we propose a theoretical approach mapping the TE network on a two-port network. In contrast to a conventional single-port (i.e., resistor) network model, our model al
Externí odkaz:
http://arxiv.org/abs/1501.03229
The second-order nonlinear optical susceptibility $\Pi^{(2)}$ for second harmonic generation is calculated for gapped graphene. The linear and second-order nonlinear plasmon excitations are investigated in context of second harmonic generation (SHG).
Externí odkaz:
http://arxiv.org/abs/1311.4828
We present a formalism for calculating the image potential for a two-dimensional electron gas (2DEG) with Rashba spin-orbit interaction (SOI) as well as for a 2D topological insulator (TI). The formalism is further generalized for including the Coulo
Externí odkaz:
http://arxiv.org/abs/1310.1332