Tailoring plasmon excitations in armchair nanoribbons

A Iurov, L Zhemchuzhna, G Gumbs, D Huang… - Scientific reports, 2021 - nature.com
We have calculated and investigated the electronic states, dynamical polarization function
and the plasmon excitations for α-T 3 nanoribbons with armchair-edge termination. The …

Generalized WKB theory for electron tunneling in gapped lattices

N Weekes, A Iurov, L Zhemchuzhna, G Gumbs… - Physical Review B, 2021 - APS
We generalize Wentzel-Kramers-Brillouin (WKB) semiclassical equations for pseudospin-1
α− T 3 materials with arbitrary hopping parameter 0< α< 1, which includes the dice lattice …

Klein tunneling of optically tunable Dirac particles with elliptical dispersions

A Iurov, L Zhemchuzhna, P Fekete, G Gumbs… - Physical Review …, 2020 - APS
We have investigated electron tunneling through an atomically smooth square potential
barrier for both the dice lattice and graphene under a linearly polarized off-resonant and …

Optically modulated tunneling current of dressed electrons in graphene and a dice lattice

A Iurov, L Zhemchuzhna, G Gumbs, D Huang, P Fekete - Physical Review B, 2022 - APS
Based on the transmission coefficient of tunneling electrons, we have presented tunneling
current and conductivity across a square-potential barrier for both graphene and α-T 3 …

Effect of magnetic field on the electronic properties of an ring

M Islam, T Biswas, S Basu - Physical Review B, 2023 - APS
We consider a quantum ring of a certain radius R built from a sheet of the α-T 3 lattice and
solve for its spectral properties in the presence of an external magnetic field. The energy …

Seebeck and Nernst effects of pseudospin-1 fermions in the model under magnetic fields

W Duan - Physical Review B, 2023 - APS
We numerically study the Seebeck and Nernst effects of pseudospin-1 fermions in the α− T 3
model under magnetic fields by combining the nonequilibrium Green's function and the …

[HTML][HTML] Highly efficient quantum heat engine operating at maximum power in the α-T3 lattice

XP Wen, ZP Niu - Physics Letters A, 2023 - Elsevier
The α− T 3 lattice, an interpolation of graphene's honeycomb lattice and the dice lattice, has
drawn a lot of attention. Herein, the thermoelectric properties of the α− T 3 lattice based …

Optical conductivity of gapped materials with a deformed flat band

A Iurov, L Zhemchuzhna, G Gumbs, D Huang - Physical Review B, 2023 - APS
We derive and discuss the optical conductivity of α-T 3 materials with a finite band gap in
their energy dispersions. In contrast with familiar α-T 3 materials, this constitutes a nontrivial …

[HTML][HTML] Floquet Modification of the Bandgaps and Energy Spectrum in Flat-Band Pseudospin-1 Dirac Materials

A Iurov, M Mattis, L Zhemchuzhna, G Gumbs… - Applied Sciences, 2024 - mdpi.com
In this paper, we investigate the so-called electronic dressed states, a unified quasiparticle
resulting from the interaction between electrons in a two-dimensional material with an off …

Application of the WKB Theory to Investigate Electron Tunneling in Kek-Y Graphene

A Iurov, L Zhemchuzhna, G Gumbs, D Huang - Applied Sciences, 2023 - mdpi.com
In this paper, we have constructed a WKB approximation for graphene having a Y-shaped
Kekulé lattice distortion and a special folding of the K and K′ valleys, which leads to very …