WebSep 29, 2024 · This phonon-drag effect also induces an unusual, prominent temperature and field dependence of quantum oscillations in thermoelectric transport signals. On the other … WebMar 31, 2024 · In this work, we systematically examine the phonon drag effect, namely the momentum exchange between nonequilibrium phonons and electrons, and its impact on …
Thermoelectric transport and phonon drag in Weyl …
WebMar 1, 1988 · Here the upper two curves, for negligible i-i scattering, were included to demonstrate the "pure" drag phenomenon, because the low-field characteristics of the compensated material contains also an additional phonon-heating effect: the reduced cooling efficiency of the phonons leads to higher carrier energies and therefore to a … WebFeb 19, 2013 · The spin Seebeck effect refers to the generation of a spin voltage caused by a temperature gradient in a ferromagnet, which enables the thermal injection of spin currents from the ferromagnet into an attached nonmagnetic metal over a macroscopic scale of several millimeters. how do we directly express our anger
(PDF) Thermopower in Si-Ge Alloy Nanowire - Academia.edu
WebPhonon drag does not affect the electrical resistivity. σ is only affected by the rate that the electrons and phonons scatter from each other. That rate is not affected by phonon drag and there is no peak in the conductivity or resistivity. The thermopower is the only measurement that shows the peak from phonon drag. WebThe Fig.1: Variation of Thermopower S with Carrier reduction in SiGe alloy NWs came from the phonon alloy Concentration (Ns) scattering which scatters short wavelength phonons with high frequency, while low frequency phonons are scattered Figure 1 show our calculations from equation (2) by the phonon boundary scattering. WebMar 31, 2016 · The interaction mechanisms between electrons and acoustic phonons are considered, taking into account potential screening of the interaction. It is found that the … how do we disciple others