Spontaneous Magnetization and Electron Momentum Density in 3D Quantum Dots

Details Spontaneous Magnetization and Electron Momentum Density in 3D Quantum Dots Spontaneous Magnetization and Electron Momentum Density in 3D Quantum Dots

2003-05-09

arxiv.org/abs/cond-mat/0305222v1

Physics

Condensed Matter

Materials Science

5 pages (Revtex4), 4 (eps) figures

Scientific paper

10.1103/PhysRevB.68.165326

We discuss an exactly solvable model Hamiltonian for describing the interacting electron gas in a quantum dot. Results for a spherical square well confining potential are presented. The ground state is found to exhibit striking oscillations in spin polarization with dot radius at a fixed electron density. These oscillations are shown to induce characteristic signatures in the momentum density of the electron gas, providing a novel route for direct experimental observation of the dot magnetization via spectroscopies sensitive to the electron momentum density.

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