The Droplet State and the Compressibility Anomaly in Dilute 2D Electron Systems
Strongly Correlated Electrons
2009-11-07 v1 Disordered Systems and Neural Networks
Abstract
We investigate the space distribution of carrier density and the compressibility of two-dimensional (2D) electron systems by using the local density approximation. The strong correlation is simulated by the local exchange and correlation energies. A slowly varied disorder potential is applied to simulate the disorder effect. We show that the compressibility anomaly observed in 2D systems which accompanies the metal-insulator transition can be attributed to the formation of the droplet state due to disorder effect at low carrier densities.
Keywords
Cite
@article{arxiv.cond-mat/0103541,
title = {The Droplet State and the Compressibility Anomaly in Dilute 2D Electron Systems},
author = {Junren Shi and X. C. Xie},
journal= {arXiv preprint arXiv:cond-mat/0103541},
year = {2009}
}
Comments
4 pages, 3 figures