Rectangular quantum dots in high magnetic fields

Details Rectangular quantum dots in high magnetic fields Rectangular quantum dots in high magnetic fields

2003-11-28

arxiv.org/abs/cond-mat/0311639v1

Phys. Rev. B 69, 165309 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 6 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.165309

We use density-functional methods to study the effects of an external magnetic field on two-dimensional quantum dots with a rectangular hard-wall confining potential. The increasing magnetic field leads to spin polarization and formation of a highly inhomogeneous maximum-density droplet at the predicted magnetic field strength. At higher fields, we find an oscillating behavior in the electron density and in the magnetization of the dot. We identify a rich variety of phenomena behind the periodicity and analyze the complicated many-electron dynamics, which is shown to be highly dependent on the shape of the quantum dot.

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