In this paper we address the topic of inelastic electron scattering in mesoscopic quantum transport. For systems where only elastic scattering is present, Landauer theory provides an adequate description of transport that relates the electronic current to single-particle transmission and reflection probabilities. A formalism proposed recently by Bonc̆a and Trugman facilitates the calculation of ...

We present results of experimental and theoretical investigations of electron transport through stub-shaped waveguides or electron stub tuners (ESTs) in the ballistic regime. Measurements of the conductance G as a function of voltages, applied to different gates Vi (i =bottom, top, and side) of the device, show oscillations in the region of the first quantized plateau which we attribute to refl...

Abstract. A new approach in the quantum theory of few-electron nanoelectronic devices – the S-matrix approach – is presented in a simple example: a single-electron transistor consisting of a single-level quantum dot connected with two metallic leads through the corresponding potential barriers. The electron transport through the quantum dot due to the electron tunneling between the dot and the ...

Electron-hole symmetry in conjugated polymers is found to exist in not only the band structure but also the defect levels caused by structure disorder. The commonly observed higher hole mobility is explained by (1) the compensation of the hole traps by the unintentional background p doping; and (2) the electron traps caused by oxidation. Higher electron mobility in N and O containing conjugated...

The long-standing discrepancy between the theoretically and experimentally determined v = 0 → 1 vibrational cross-section of hydrogen is addressed by analysing the transport theory used to deconvolute electron swarm transport data. The implementation of the full energy and angular dependence of quantum mechanically derived differential cross-sections in the semiclassical transport theory (using...

The temperature dependence of the electron-spin relaxation time in MgB2 is anomalous as it does not follow the resistivity above 150 K; it has a maximum around 400 K and decreases for higher temperatures. This violates the well established Elliot-Yafet theory of spin relaxation in metals. The anomaly occurs when the quasiparticle scattering rate (in energy units) is comparable to the energy dif...

The origin of anomalous electron thermal turbulence from spatial gradients in magnetized plasmas is described. Laboratory experiments demonstrating key features of drift waves are reviewed. The turbulent electromagnetic fields produce an anomalous transport that scales with both the gradient parameters and microscopic plasma scale length parameters. The change from the micro-scale dominated gyr...

The effect of the exchange-correlation potential in ab initio electron transport calculations is investigated by constructing optimized effective potentials using different energy functionals or the electron density from second-order perturbation theory. The authors calculate electron transmission through two atomic chain systems, one with charge transfer and one without. Dramatic effects are c...

A theory based electron thermal diffusivity has been proposed recently which is based on electron drift wave turbulence. When account is taken for the effect of local shear changes that are produced in high poloidal beta equilibrium this theory is seen to predict the observed improvement of tokamak confinement with plasma current. Confinement is seen to be good at low poloidal beta, degrade as ...

We review the concepts and methods of modeling of the dye-sensitized solar cell, starting from fundamental electron transfer theory, and using phenomenological transport-conservation equations. The models revised here are aimed at describing the components of the current-voltage curve of the solar cell, based on small perturbation experimental methods, and to such an end, a range of phenomena o...