19 citations · 115 across the 15 of their papers we have counts for
16 papers
Strain- and doping-tunable optical resonance in Kekulé-Y graphene
Yawar Mohammadi
We investigate the optical response of Kekulé-Y graphene under uniaxial strain and carrier doping. Using a low-energy effective Hamiltonian, we show that strain reshapes the low-en…
Optical fingerprints across the strain-driven semi-Dirac transition in Kekulé-O graphene
Yawar Mohammadi
We show that the strain-driven semi-Dirac transition in Kekulé-O graphene gives rise to a sequence of anisotropic optical fingerprints associated with band structure reconstruction…
Electronic spectrum and optical properties of Y-shaped Kekule-patterned graphene: Band nesting resonance as an optical signature
Yawar Mohammadi
Employing tight-binding model we investigate the effects of a uniform Y-shaped Kekule lattice distortion on the electronic spectrum and optical conductivity of graphene. We derive…
Tunable plasmon modes in doped AA-stacked bilayer graphene
Yawar Mohammadi
We study plasmon modes in doped AA-stacked bilayer graphene (BLG) within the nearest-neighbor tight-binding and the random phase approximation. We obtain closed analytical expressi…
Integer quantum Hall effect in AAA-stacked trilayer graphene
Yawar Mohammadi
We obtain an analytical expression for the Hall conductivity in AAA-stacked trilayer graphene (TLG) within the linear response Kubo formalism. Interestingly, we find that the quant…
Photo-induced spin and valley-dependent Seebeck effect in the low-buckled Dirac materials
Yawar Mohammadi
Employing the Landauer-Buttiker formula we investigate the spin and valley dependence of Seebeck effect in low-buckled Dirac materials (LBDMs), whose band structure are modulated b…
Controllable photo-induced spin and valley filtering in silicene
Yawar Mohammadi, Borhan Arghavani Nia
We study ballistic transport of Dirac electrons through a strip in silicene, when the strip is exposed to off-resonant circularly polarized light and an electric field applied perp…
Controllable intrinsic DC spin/valley Hall conductivity in ferromagnetic silicene: Exploring a fully spin/valley polarized transport
Yawar Mohammadi, Borhan Arghavani Nia
We study intrinsic DC spin and valley Hall conductivity in doped ferromagnetic silicene in the presence of an electric filed applied perpendicular to silicene sheet. By calculating…
Strain engineering the charged-impurity-limited carrier mobility in phosphorene
Yawar Mohammadi, Borhan Arghavani Nia
We investigate, based on the tight-binding model and in the linear deformation regime, the strain dependence of the electronic band structure of phosphorene, exposed to a uniaxial…
Comment on "Dielectric screening and plasmons in AA-stacked bilayer graphene"
Yawar Mohammadi
In this comment we show that some equations and results of the paper titled "Dielectric screening and plasmons in AA-stacked bilayer graphene" are not correct. Furthermore, we pres…
Charge screening and carrier transport in AA-stacked bilayer graphene: tuning via a perpendicular electric field
Yawar Mohammadi
The static dielectric function in AA-stacked bilayer graphene (BLG), subjected to an electric field applied perpendicular to layers, is calculated analytically within the random ph…
RKKY interaction in bilayer graphene
Yawar Mohammadi, Rostam Moradian
We study the RKKY interaction between two magnetic impurities located on same layer (intralayer case) or on different layers (interlayer case) in undoped bilayer graphene in the fo…
Electronic properties of armchair AA-stacked bilayer graphene nanoribbons
Yawar Mohammadi, Borhan Arghavani Nia
We study analytically, based on the tight-binding model, the electronic band structure of armchair AA-stacked bilayer graphene nanoribbons (BLGNRs) in several regimes. We apply har…
Magnetism of an adatom on biased AA-stacked bilayer graphene
Yawar Mohammadi, Rostam Moradian
We study magnetism of an adatom adsorbed on AA-stacked bilayer graphene (BLG) in both unbiased and biased cases, using the Anderson impurity model. We find different magnetic phase…
Effects of doping and bias voltage on the screening in AAA-stacked trilayer graphene
Yawar Mohammadi, Rostam Moradian, Farzad Shirzadi Tabar
We calculate the static polarization of AAA-stacked trilayer graphene (TLG) and study its screening properties within the random phase approximation (RPA) in all undoped, doped and…
Local moment formation in bilayer graphene
Yawar Mohammadi, Rostam Moradian
The local properties of bilayer graphene (BLG) due to the spatial inhomogeneity of its sublattices are of interest. We apply Anderson impurity model to consider the local moment fo…