Warm dense matter conductivity including electron-electron collisions
Abstract
The controversy with respect to the role of electron-electron collisions in the dynamic conductivity of dense plasmas is resolved. In particular, the dc conductivity is analyzed in the low-density, non-degenerate limit where the Spitzer theory is valid and electron-electron collisions lead to the well-known reduction of the result for a Lorentz plasma. With increasing degeneracy, the contribution of electron-electron collisions to the dc conductivity is decreasing and can be neglected for the liquid metal domain where the Ziman-Faber theory is applicable. We show how electron-electron collisions have to be implemented in calculations based on the Kubo-Greenwood formula which is prevalently applied in simulations for the frequency-dependent conductivity in the warm dense matter region, i.e. for arbitrary degeneracy.
Cite
@article{arxiv.1401.0805,
title = {Warm dense matter conductivity including electron-electron collisions},
author = {H. Reinholz and G. Röpke and S. Rosmej and R. Redmer},
journal= {arXiv preprint arXiv:1401.0805},
year = {2015}
}
Comments
21 pages, 4 figures