Magnetotransport in disordered delta-doped heterostructures

Details Magnetotransport in disordered delta-doped heterostructures Magnetotransport in disordered delta-doped heterostructures

2006-07-11

arxiv.org/abs/cond-mat/0607263v2

Physical Review B 74, 195334 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages RevTeX, 2 figures, uses psfrag; published version

Scientific paper

10.1103/PhysRevB.74.195334

We discuss theoretically how electrons confined to two dimensions in a delta-doped heterostructure can arrange themselves in a droplet-like spatial distribution due to disorder and screening effects when their density is low. We apply this droplet picture to magnetotransport and derive the expected dependence on electron density of several quantities relevant to this transport, in the regimes of weak and moderate magnetic fields. We find good qualitative and quantitative agreement between our calculations and recent experiments on delta-doped heterostructures.

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