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 (1)

• Zeeman energy and spin relaxation in a one-electron quantum dot

Cited by in corpus (1)

• Tailoring Magnetism in Quantum Dots