Magnetotransport in two-dimensional electron gases on cylindrical surfaces

Details Magnetotransport in two-dimensional electron gases on cylindrical surfaces Magnetotransport in two-dimensional electron gases on cylindrical surfaces

2007-03-26

arxiv.org/abs/cond-mat/0703665v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 3 figures; Proceedings of the International Symposium on Mesoscopic Superconductivity and Spintronics, Atsugi, Japan,

Scientific paper

We have fabricated high-mobility, two-dimensional electron gases in a GaAs quantum well on cylindrical surfaces, which allows to investigate the magnetotransport behavior under varying magnetic fields along the current path. A strong asymmetry in the quantum Hall effect appears for measurements on both sides of the conductive path. We determined the strain at the position of the quantum well. We observe ballistic transport in 8-micrometers-wide collimating structures.

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