Wigner Glass, Spin-liquids, and the Metal-Insulator Transition

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Abstract
Recent experiments have challenged the commonly held assumption that there is no metal-insulator transition in two dimensions. While the experiments are still at the stage of rapid development, it is becoming evident that they cannot be understood from the conventional perspective of weak interactions. In the present paper, we approach the subject from an unconventional strong interaction perspective. Our analysis yields a rich zero temperature phase structure involving distinct states of matter: a Wigner glass, a spin-liquid, and a non-Fermi liquid. We also discuss how such phases can be probed further in future experiments.

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