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Reentrant Phase Diagram of Two-Dimensional Electron Gas

Jukka A. Ketoja·Indubala I. Satija
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Abstract

We study the phase diagram of an electron on a square lattice in a transverse magnetic field. Using a renormalization scheme, we show that the inequality of the two next-nearest neighbor couplings destroys the fat critical regime above the bicritical line and replaces it with another reentrant extended phase. Furthermore, the universal strange attractor describing self-similar fluctuations of the localized phase is replaced by a new fixed point. The reentrant extended phase and the new fixed point of the localized phase belong to the universality class of an anisotropic triangular lattice.

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Jukka A. Ketoja, Indubala I. Satija. 1995-10-13. Reentrant Phase Diagram of Two-Dimensional Electron Gas. https://arxiv.org/abs/cond-mat/9510076

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