Flux phases in two-dimensional tight-binding models | Zendy

Amanda Harris | Zendy; T. C. Lubensky | Zendy; E. J. Melé | Zendy

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Flux phases in two-dimensional tight-binding models

Author(s) -

Amanda Harris,

T. C. Lubensky,

E. J. Melé

Publication year - 1989

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.40.2631

Subject(s) - physics , condensed matter physics , tight binding , square lattice , invariant (physics) , magnetic flux , phase transition , lattice (music) , flux (metallurgy) , antiferromagnetism , magnetic moment , quantum mechanics , magnetic field , ising model , materials science , electronic structure , acoustics , metallurgy

Using a gauge-invariant tight-binding model on a rigid square lattice, we discuss the transition between a lowtemperature 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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