Pseudo-gap and spin polarization in a two-dimensional electron gas
Strongly Correlated Electrons
2015-06-24 v2
Abstract
Tunnelling density of states in the vicinity of Fermi level of a two-dimensional electron gas subjected to an external parallel and zeroth magnetic field is calculated. It reveals a pseudo-gap recently observed in the experiments. The gap originates in spin polarization of 2DEG. Non-monotonic dependence of energy on a Landau level filling factor (density) was obtained. It implies the tunneling current peculiarities at filling factors 1/2 and 1. The Ising-like model of the exchange interaction in 2DEG was exploited instead of the conventional one. It was crucial to achieve even a qualitative agreement with experimental data.
Cite
@article{arxiv.cond-mat/0307265,
title = {Pseudo-gap and spin polarization in a two-dimensional electron gas},
author = {V. Vyurkov and A. Vetrov and V. Ryzhii},
journal= {arXiv preprint arXiv:cond-mat/0307265},
year = {2015}
}
Comments
6 pages, 3 figure; corrected typos, improved figures