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Metal-Insulator Transition in Two- and Three-Dimensional Logarithmic Plasmas

S. Kragset·A. Sudbo·F. S. Nogueira
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Abstract

We consider scaling of the mean square dipole moments in a plasma with logarithmic interactions in a two- and three-dimensional system. In both cases, we establish the existence of a low-temperature regime where the mean square dipole moment does not scale with system size and a high-temperature regime where it does scale with system size. Thus, there is a nonanalytic change in the polarizability of the system as a function of temperature, and hence a metal-insulator transition in both cases. The relevance of this transition in three dimensions to quantum phase transitions in 2+1-dimensional systems is briefly discussed.

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S. Kragset, A. Sudbo, F. S. Nogueira. 2004-03-18. Metal-Insulator Transition in Two- and Three-Dimensional Logarithmic Plasmas. https://doi.org/10.1103/physrevlett.92.186403

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