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RESEARCH PRODUCT
Magnetic field dependence of quantum dot ground states
R. CenniFabio CavaliereBernhard KramerMaura SassettiU. De Giovanninisubject
PhysicsAngular momentumCondensed matter physicsQuantum dotsUnrestricted Hartree–FockElectronHartree fockCondensed Matter PhysicsSpin quantum numberSettore FIS/03 - Fisica Della MateriaAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsMagnetic fieldSpinQuantum dotSpin blockadeMANY-PARTICLE SYSTEMSWave functionSpin-½description
We study the ground states of a planar quantum dot with N = 5,6,7 electrons, in the presence of a perpendicular magnetic field. Using a spatially unrestricted Hartree Fock technique followed by spin and angular momentum symmetry restoration, chemical potentials are calculated and transitions between different ground states are identified. A spin blockade in the 6 -> 7 transition is found. The structure of the quantum dot wave functions is illustrated by their electron densities. (c) 2007 Elsevier B.V. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-03-01 |