Department of Physics Papers

Document Type

Journal Article

Date of this Version

8-1-1989

Publication Source

Physical Review B

Volume

40

Issue

4

Start Page

2631

Last Page

2634

DOI

10.1103/PhysRevB.40.2631

Abstract

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.

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Date Posted: 12 August 2015

This document has been peer reviewed.