Quantum Hall Ferrimagnetism in lateral quantum dot molecules

Abstract

We demonstrate the existance of ferrimagnetic and ferromagnetic phases in a spin phase diagram of coupled lateral quantum dot molecules in the quantum Hall regime. The spin phase diagram is determined from Hartree-Fock Configuration Interaction method as a function of electron numbers N, magnetic field B, Zeeman energy, and tunneling barrier height. The quantum Hall ferrimagnetic phase corresponds to spatially imbalanced spin droplets resulting from strong inter-dot coupling of identical dots. The quantum Hall ferromagnetic phases correspond to ferromagnetic coupling of spin polarization at filling factors between $\nu =2$ and $\nu =1$.

4 pages, 4 figures

References in corpus (9)

• Electron transport through double quantum dots
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Correlated few-electron states in vertical double-quantum-dot systems
• Ferromagnetism mediated by few electrons in a semimagnetic quantum dot
• The Collapse of the Spin-Singlet Phase in Quantum Dots
• Thermodynamics of the (1,1/2) Ferrimagnet in Finite Magnetic Fields
• Spin-blockade spectroscopy of a two-level artificial molecule
• Real Space Hartree-Fock Configuration Interaction Method For Complex Lateral Quantum Dot Molecules
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Cited by in corpus (3)

• Tailoring Magnetism in Quantum Dots
• Theory of spin, electronic and transport properties of the lateral triple quantum dot molecule in a magnetic field
• Spin transitions induced by a magnetic field in quantum dot molecules