Abstract
The static conductivity of the diluted magnetic semiconductor is calculated using an equation of motion approach for the current response combined with time-dependent density-functional theory to account for Hartree and exchange interactions within the hole gas. We find that the Coulomb scattering off the charged impurities alone is not sufficient to explain the experimentally observed drop in resistivity below the ferromagnetic transition temperature: the often overlooked scattering off the fluctuations of localized spins is shown to play a significant role.
- Received 18 June 2009
DOI:https://doi.org/10.1103/PhysRevB.80.205202
©2009 American Physical Society