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.
@article{arxiv.cond-mat/0703665,
title = {Magnetotransport in two-dimensional electron gases on cylindrical surfaces},
author = {K. -J. Friedland and R. Hey and H. Kostial and U. Jahn and E. Wiebicke and K. H. Ploog and A. Vorob'ev and Ju. Yukecheva and V. Prinz},
journal= {arXiv preprint arXiv:cond-mat/0703665},
year = {2014}
}
Comments
6 pages, 3 figures; Proceedings of the International Symposium on Mesoscopic Superconductivity and Spintronics, Atsugi, Japan, February 2006, edited by H. Takayanagi and J. Nitta (World Scientific, in press)