We consider an interaction-driven scenario for the two-dimensional metal-insulator transition in zero magnetic field (2D-MIT), based on melting the Wigner crystal through vacancy-interstitial pair formation. We show that the transition from the Wigner-Mott insulator to a heavy Fermi liquid emerges as an instability to self-doping, resembling conceptually the solid to normal liquid transition in He3. The resulting physical picture naturally explains many puzzling features of the 2D-MIT.
@article{arxiv.0704.0250,
title = {2D-MIT as self-doping of a Wigner-Mott insulator},
author = {S. Pankov and V. Dobrosavljevic},
journal= {arXiv preprint arXiv:0704.0250},
year = {2008}
}
Comments
Contribution to the Proceedings of SCES2007; 2 pages, 1 figure.