Thermoelectric properties of the interacting two dimensional electron gas in the diffusion regime
V. T. Dolgopolov+, A. Gold*×
+Institute of Solid State Physics RAD, 142432 Chernogolovka, Russia
*Centre d'Elaboration de Materiaux et d'Etudes Structurales (CEMES/CNRS)
×Universit Paul Sabatier, 31055 Toulouse, France
We demonstrate that kinetic coefficients related to thermoelectric
properties of the two dimensional electron gas in the diffusive
regime are strongly influenced by electron-electron interaction.
As an example we consider the thermoelectric coefficients of the
diluted two-dimensional electron gas in Si(100) MOSFET's in the
presence of charged-impurity scattering. We find that the screening
anomaly at q=2k F, also responsible for Friedel oscillations,
leads at low electron densities to a large change in
the thermoelectric coefficient for the thermopower.