Interlayer Magnetic Coupling and the Quantum Hall Effect in Multilayer Electron Systems

Details Interlayer Magnetic Coupling and the Quantum Hall Effect in Multilayer Electron Systems Interlayer Magnetic Coupling and the Quantum Hall Effect in Multilayer Electron Systems

1998-04-28

arxiv.org/abs/cond-mat/9804298v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 ps pages

Scientific paper

10.1103/PhysRevLett.81.4692

We study the effect that the electron-electron interaction has on the properties of a multilayer electron system. We consider the case corresponding to filling factor unity in each layer. We find that as a function of the sample parameters the system has ferromagnetic, canted antiferromagnetic or paramagnetic interlayer spin correlations. These three ground states are QHE phases, because of the existence of a finite activation energy. In the ferromagnetic phase the gap is due to the intrawell exchange energy, whereas in the paramagnetic phase the gap appears due to the spatial modulation of the interwell coherence.

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