2D-MIT as self-doping of a Wigner-Mott insulator

Details 2D-MIT as self-doping of a Wigner-Mott insulator 2D-MIT as self-doping of a Wigner-Mott insulator

2007-04-02

arxiv.org/abs/0704.0250v1

Physica B 403, 1440 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

Contribution to the Proceedings of SCES2007; 2 pages, 1 figure.

Scientific paper

10.1016/j.physb.2007.10.365

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.

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