1995/10/13 by Jukka A. Ketoja, Ketoja, Jukka A., Indubala I. Satija +1
Chemistry · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Inorganic Fluorides and Related Compounds #Quantum, superfluid, helium dynamics #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9510076
4 pages, RevTeX, 1 figure included
arxiv created 1995/10/13 · openalex publication_date 1995/10/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.