10.9k citations
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8 papers · 2 filters
A DFT study on the electronic and magnetic properties of triangular graphene antidot lattices
Zahra Talebi Esfahani, Alireza Saffarzadeh, Ahmad Akhound
We explore the effect of antidot size on electronic and magnetic properties of graphene antidot lattices from first-principles calculations. The spin-polarized density of states, b…
Thermoelectric voltage switching in gold atomic wire junctions
Alireza Saffarzadeh, Firuz Demir, George Kirczenow
We explore the thermoelectric properties of gold atomic chains bridging gold electrodes by means of \textit{ab initio} and semi-empirical calculations, and heuristic reasoning. We…
NMR study of optically hyperpolarized phosphorus donor nuclei in silicon
P. Gumann, H. Haas, S. Sheldon +4
We use above-bandgap optical excitation, via a 1047 nm laser, to hyperpolarize the P spins in low-doped (N cm) natural abundance silicon at 4.2 K…
Dissipative discrete time crystals
James O'Sullivan, Oliver Lunt, Christoph W. Zollitsch +3
Periodically driven quantum systems host a range of non-equilibrium phenomena which are unrealizable at equilibrium. Discrete time-translational symmetry in a periodically driven m…
Optoelectronic properties of defective MoS and WS monolayers
Saboura Salehi, Alireza Saffarzadeh
We theoretically explore the effect of metal and disulphur vacancies on electronic and optical properties of MoS and WS monolayers based on a Slater-Koster tight-binding mo…
Band-offset-induced lateral shift of valley electrons in ferromagnetic MoS/WS planar heterojunctions
Hassan Ghadiri, Alireza Saffarzadeh
Low-energy coherent transport and Goos-Hänchen (GH) lateral shift of valley electrons in planar heterojunctions composed of normal MoS and ferromagnetic WS monolayers are t…
Dirac cones and mass terms in bosonic spectra
P. Sathish Kumar, R. Ganesh
The notion of Dirac cones, wherein two or more bands become degenerate at a certain momentum, is the starting point for the study of topological phases. Dirac cones have been thoro…
From Birefringent Electrons to a Marginal or Non-Fermi Liquid of Relativistic Spin-1/2 Fermions: An Emergent Superuniversality
Bitan Roy, Malcolm P. Kennett, Kun Yang +1
We present the quantum critical theory of an interacting nodal Fermi-liquid of quasi-relativisitc pseudo-spin-3/2 fermions that have a non-interacting birefringent spectrum with tw…