Within a self-consistent Born approximation, the Hall conductivity of two-dimensional graphite system in presence magnetic field is studied by quantum transport theory. The calculated for short- and long-range scatterers. It analytically limit strong fields Boltzmann weak fields. numerical calculation shows that displays effect when Fermi energy low-lying Landau levels scattering weak. When becomes away from $\ensuremath{\varepsilon}=0,$ it tends to result.

A topological anomaly present at zero energy is shown to give rise a peculiar and singular behavior of the dynamic static conductivity in two-dimensional honeycomb lattices. calculation self-consistent Born approximation reveals that this dependence prevails although being somewhat smoothed out even if level broadening effects are taken into account.

White light-emitting diodes (LEDs) were fabricated by associating an InGaN-based blue LED chip with highly luminescent phosphors, (YAG:Ce) and . The thermal stability of these depending weakly on the composition activator concentration, remains high over a wide range temperatures When mixture YAG:Ce was coated LED, resultant white had luminous efficiency , color rendering index temperature (at 50 mA). Additionally, coordinates, Ra tend to remain constant against appreciable variation in...

We investigate the electron transport through T-shaped quantum-dot (QD) structure theoretically, by coupling a Majorana zero mode to terminal QD. It is found that in double-QD configuration, presence of can efficiently dissolve antiresonance point conductance spectrum while inducing peak appear at same energy position. In case asymmetric QD-lead coupling, such valley-to-peak transition induced still exists. Next, we observe multi-QD zero-bias limit, values are always as result, independent...

The organic electrolyte can resolve the hurdle of hydrogen evolution in aqueous electrolytes but suffers from sluggish electrochemical reaction kinetics due to a compromised mass transfer process. Herein, we introduce chlorophyll, zinc methyl 3-devinyl-3-hydroxymethyl-pyropheophorbide-a (Chl), as multifunctional additive for aprotic batteries address related dynamic problems systems. Chl exhibits multisite zincophilicity, which significantly reduces nucleation potential, increases sites, and...

As a noble metal, gold is known to possess ultrahigh conductivity and therefore widely used as conductor in variety of integrated circuits. Recently, two-dimensional (2D) material made single atomic layer has been successfully produced, called goldene, after the name graphene. This immediately raises an interesting question whether goldene excellent conductor, comparable its three-dimensional counterpart. In present paper, by performing first principles calculations on arising from...

By means of the nonequilibrium Green function technique, electronic transport through a multiple-quantum-dot system is theoretically studied. In this system, one-dimensional quantum dot chain between two contacts forms main channel for tunneling. Each in couples laterally to dangling dot. Whenever energy incident electron aligned with levels dots, zero point transmission occurs due Fano antiresonance. As result, linear conductance spectrum presents an insulating band around antiresonant...

Electronic transport through a triple-quantum-dot ring with three terminals is theoretically studied. By introducing local Rashba spin-orbit interaction on an individual quantum dot, we calculate the charge and spin currents in one lead. We find that pure current without accompanying appears even at zero magnetic field case. The polarization direction of can be inverted by altering bias voltage. In addition, tuning strength, reach their respective peaks alternately.

The subband structures and edge magnetism of α-, β-, γ- (6, 6, 12)-graphyne nanoribbons with zigzag edges are studied by means ab initio calculations. Dispersionless subbands antiparallel magnetic ordering occur in these nanostructures, just like zigzag-edged graphene nanoribbons. More importantly, a very simple tight-binding model is established which can accurately describe the ribbons. From such we find that β-graphyne nanoribbon has many more transport modes than other graphyne...

The Lifshitz transition (LT), a topological structure of Fermi surfaces, can induce various intricate physical properties in metallic materials. In this study, through first-principles calculations, we explore the nontrivial effect LT on intrinsic resistivity Cu2N monolayer arising from electron–phonon (el-ph) scattering. We find that when is induced by electron doping, multibranch surface simplifies into single-band profile. Such an leads to decoupling low-frequency flexural phonons el-ph...

We develop a self-consistent-field lattice model for block copolymers and propose novel general method to solve the equations. The approach involves describing polymer chains in employing two-stage relaxation procedure evolve system as rapidly possible free-energy minimum. In order test validity of this approach, we use study microphases rod-coil diblock copolymers. addition lamellar cylindrical morphologies, micellar, perforated lamellar, gyroid, zigzag structures have been identified...

The band structure of a one-dimensional superlattice formed by patterning graphene lattice with periodic line defect array is calculated. lowest conduction subband such connects two inequivalent Dirac points flat dispersion, which reminiscent the flat-bottomed zigzag-edged nanoribbon (ZEGNR). According to characteristic, finite length in graphene, instead ZEGNR, can be utilized realize valley filtering function. calculated electronic transmission spectrum shows nearly perfect polarization...

Aqueous zinc metal batteries (AZMBs) are an energy storage system that is expected to replace traditional lithium batteries. However, the practical application of AZMBs hampered by some inherent drawbacks. Herein, amino acid additive with a screening property introduced. The additives effectively erode Zn(002) binding specific crystallographic plane, achieving ordered layered three-dimensional structure anode, and shielding effect can inhibit activated H2O induce uniform Zn deposition....

The quest for efficient, economical and stable non-precious metal photocatalysts remains a formidable task in the realm of photocatalytic hydrogen evolution reactions (HER). In this work, range indolenine-based...

In the effective mass approximation, electronic property in graphene can be characterized by relativistic Dirac equation. Within such a continuum model we investigate transport through waveguides formed connecting multiple segments of armchair-edged nanoribbons different widths. By using appropriate wavefunction connection conditions at junction interfaces, generalize conventional transfer matrix approach to formulate linear conductance waveguide terms structure parameters and incident...

Aqueous zinc-ion batteries are considered one of the most promising energy storage technologies owing to their low cost, environmental friendliness, and safety, but they chronically perplexed by Zn dendrites, corrosion, passivation, more. Herein, a reactive copper phthalocyanine (CuPc) is employed rebuild anode with Cu, acting as physical barrier interfacial regulator homogenize Zn2+ flux for smooth deposition restrain corrosion. As result, CuPc@Zn shows polarization voltages less than 145...

Electronic transport through a mesoscopic ring consisting of coupled quantum dots is theoretically studied. First, an analytical expression about the linear conductance obtained as function quantum-dot level, which can be adjusted by gate voltage. Then spectrum (the versus level) calculated numerically. The peaks and zero points in this spectrum, due to resonance antiresonance, respectively, are discussed detail. following interesting results found for even-numbered rings some specific...

The presence of an extended line defect in graphene brings about some interesting electronic properties to such a truly two-dimensional (2D) carbon material, as the energy-band engineering and valley filtering. By establishing appropriate connection condition for spinor wave function across defect, we find that massless Dirac equation is still valid theoretical model describe low-energy embedded structure. To check validity wave-function condition, take two kinds structures examples study...

By means of density functional theory calculations, we predict a new two-dimensional phosphorus allotrope with the Kagome-like lattice(Kagome-P). It is an indirect gap semiconductor band 1.64 eV. The decreases sensitively compressive strain. In particular, shrinking lattice beyond 13% can drive it into metallic state. addition, both AA and AB stacked Kagome-P multi-layer structures exhibit bandgap much smaller than Edges in monolayer probably suffer from edge reconstruction. An isolated...

Electron–phonon interaction matrix elements show that (a) valence band holes have stronger intervalley scattering than (b) conduction electrons.