Date of this Version
Physical Review B
Using a gauge-invariant tight-binding model on a rigid square lattice, we discuss the transition between a low-temperature flux phase in which orbital magnetic moments alternate antiferromagnetically in sign from plaquette to plaquette and a normal metallic phase. The order parameter, which may be chosen to be the magnetic flux penetrating a plaquette, goes continuously to zero at the transition. We also consider similar phases in a model with m spin colors antiferromagnetically exchange coupled.
Harris, A., Lubensky, T. C., & Mele, E. J. (1989). Flux Phases in Two-Dimensional Tight-Binding Models. Physical Review B, 40 (4), 2631-2634. http://dx.doi.org/10.1103/PhysRevB.40.2631
Date Posted: 12 August 2015
This document has been peer reviewed.