Antilocalization in a 2D Electron Gas in a Random Magnetic Field

Details Antilocalization in a 2D Electron Gas in a Random Magnetic Field Antilocalization in a 2D Electron Gas in a Random Magnetic Field

2000-01-25

arxiv.org/abs/cond-mat/0001368v1

Phys. Rev. Lett. 85, 1060 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, RevTeX

Scientific paper

10.1103/PhysRevLett.85.1060

We construct a supersymmetric field theory for the problem of a two-dimensional electron gas in a random, static magnetic field. We find a new term in the free energy, additional to those present in the conventional unitary sigma-model, whose presence relies on the long-range nature of the disorder correlations. Under a perturbative renormalization group analysis of the free energy, the new term contributes to the scaling function at one-loop order and leads to antilocalization.

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