Magnetotransport in C-doped AlGaAs heterostructures

Details Magnetotransport in C-doped AlGaAs heterostructures Magnetotransport in C-doped AlGaAs heterostructures

2004-06-18

arxiv.org/abs/cond-mat/0406417v2

Appl. Phys. Lett. 85, 2277 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures

Scientific paper

10.1063/1.1781750

High-quality C-doped p-type AlGaAs heterostructures with mobilities exceeding 150 000 cm$^2$/Vs are investigated by low-temperature magnetotransport experiments. We find features of the fractional quantum Hall effect as well as a highly resolved Shubnikov-de Haas oscillations at low magnetic fields. This allows us to determine the densities, effective masses and mobilities of the holes populating the spin-split subbands arising from the lack of inversion symmetry in these structures.

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