1998/04/28 by L. Brey, Luis Brey · 21 citations
Physics and Astronomy · #Antiferromagnetism #Band gap #Condensed matter physics #Electron #Exchange interaction #Ferromagnetism #Filling factor #Magnetic properties of thin films #Materials science #Paramagnetism #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.81.4692
published in Physical Review Letters 81(21), 4692-4695 (American Physical Society) · 4 ps pages
arxiv created 1998/04/28 · openalex publication_date 1998/11/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the effect that electron-electron interaction has on the properties of a multilayer electron system. We consider the case corresponding to filling factor unity in each layer and 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 spatial modulation of the interwell coherence.