In the ballistic regime, the metallic temperature dependence of the conductivity in a two-dimensional electron system in silicon is found to change non-monotonically with the degree of spin polarization. In particular, it fades away just before the onset of complete spin polarization but reappears again in the fully spin-polarized state, being, however, suppressed relative to the zero-field case. Analysis of the degree of the suppression allows one to distinguish between the screening and the interaction-based theories.
@article{arxiv.cond-mat/0504301,
title = {Conductivity of a spin-polarized two-dimensional electron liquid in the ballistic regime},
author = {A. A. Shashkin and E. V. Deviatov and V. T. Dolgopolov and A. A. Kapustin and S. Anissimova and A. Venkatesan and S. V. Kravchenko and T. M. Klapwijk},
journal= {arXiv preprint arXiv:cond-mat/0504301},
year = {2007}
}