Fractional flux periodicity of a twisted planar square lattice
arXiv:cond-mat/0401597 · doi:10.1016/j.physleta.2004.06.093
Abstract
We present fractional flux periodicity in the ground state of planar systems made of a square lattice whose boundary is compacted into a torus. The ground-state energy shows a fractional period of the fundamental unit of magnetic flux depending on the twist around the torus axis.
4 pages, 2 figures, corrected typos (v3)