Spontaneous magnetization of a two-dimensional electron gas (2DEG) is discussed. It takes place for sufficiently high electron density (i.e. for a quantum fluid state) with rs<10 which is quite beyond the condition of Wigner crystallization (rs>37) obtained by Tanatar and Ceperley. The effect essentially depends upon screening and disorder . The energy interval under the Fermi level where a spin polarization occurs as a function of electron density is computed. The spontaneous magnetic moment and a decrease of electron density of states (pseudo-gap) at the Fermi level are found.
@article{arxiv.cond-mat/0105361,
title = {Spontaneous Magnetization of a Two-Dimensional Electron Gas},
author = {V. Vyurkov and A. Vetrov},
journal= {arXiv preprint arXiv:cond-mat/0105361},
year = {2007}
}