Spin Ensemble Density Functional Theory for Inhomogeneous Quantum Hall Systems

Details Spin Ensemble Density Functional Theory for Inhomogeneous Quantum Hall Systems Spin Ensemble Density Functional Theory for Inhomogeneous Quantum Hall Systems

1997-01-10

arxiv.org/abs/cond-mat/9701079v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages RevTex, 8 encapsulated Postscript figures. Submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.56.10373

We have developed an ensemble density functional theory which includes spin degrees of freedom for nonuniform quantum Hall systems. We have applied this theory using a local-spin-density approximation to study the edge reconstruction of parabolically confined quantum dots. For a Zeeman splitting below a certain critical value, the edge of completely polarized maximum density droplet reconstructs into a spin-unpolarized structure. For larger Zeeman splittings, the edge remains polarized and develops an exchange hole.

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