About this Research Topic
Electronic and thermal transport properties are of essential importance in many technological applications. Both experiments and theory have focused on a detailed description of such transport properties for more than a century, and it is still a highly interesting topic. In particular, with the evolution of nanostructured materials, most theoretical models have to be redefined, since macroscopic descriptions of transport phenomena are often not valid on the nanoscale.
A maximum electronic transport in general is desired in most technologically important applications such as microelectronics, photovoltaic devices, thermoelectrics to name just a few. Thermal transport, on the other hand, is desired to be high in microelectronics, and low in thermoelectric devices. In both cases, nanostructuring of the material can notably affect the electronic and thermal transport, and, in fact, can be applied to directly control the properties of the material.
An important issue that affects both electronic and thermal transport is the interaction of the two carrier types, namely electrons, or charge carriers, and phonons. Interaction of the two is often described by empirical expressions lacking a fundamental description of the underlying scattering mechanisms. Experimentally, it is almost impossible to verify single scattering mechanisms that are usually described separately by theoretical models. Several approaches have been proposed recently on a theoretical level with the objective to improve our understanding of events affecting the transport mechanisms of certain materials, as, for example, the introduction of interatomic force constant disorder in the description of scattering mechanisms.
This Research Topic aims at attracting studies that contribute to a deeper understanding of different scattering mechanisms affecting electronic and thermal transport, both on an experimental and theoretical level, in particular focusing on the effect of phonon-electron interaction.
Studies are welcomed discussing transport phenomena in nanostructured condensed matter giving a detailed insight on how phonon-electron interaction contributes to electronic and thermal transport in nanostructured materials.
Topics include, but are not limited to
- Change of transport phenomena with the characteristic dimension of the materials, for example, in nanoparticles, porous structures, superlattice, nanotubes and nanowires.
- Effect of doping and other point defects on the phonon-electron interaction.
- Effect of characteristic dimension of the material on phonon-electron interaction, for example, in nanoparticles, porous structures, superlattices, nanotubes and nanowires.
- Novel approaches to measure or describe theoretically phonon-electron scattering affecting electronic and thermal transport in nanostructured materials.
Keywords: thermal transport, electronic transport, thermoelectric, nanostructures, condensed matter, semiconductors
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