Prediction of ferromagnetic correlations in coupled double-level quantum dots

Numerical results for transport properties of two coupled double-level quantum dots (QDs) strongly suggest that under appropriate conditions the dots develop a novel ferromagnetic (FM) correlation at quarter filling (one electron per dot). In the strong coupling regime (Coulomb repulsion larger than...

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Veröffentlicht in:	Physical review letters 2005-01, Vol.94 (2), p.026804.1-026804.4, Article 026804
Hauptverfasser:	MARTINS, G. B, BÜSSER, C. A, AL-HASSANIEH, K. A, MOREO, A, DAGOTTO, E
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties CORRELATIONS COUPLING DENSITY Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ELECTRONS Exact sciences and technology FERROMAGNETISM FORECASTING KONDO EFFECT NANOSCIENCE AND NANOTECHNOLOGY PEAKS PHASE DIAGRAMS Physics QUANTUM DOTS RESONANCE TRANSPORT TUNNEL EFFECT TUNNELING
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