We investigated the magnetotransport properties of high-mobility InAs/GaSb antidot lattices. In addition to the usual commensurability features at low magnetic field we found a broad maximum of classical origin around 2.5 T. The latter can be ascribed to a class of rosetta type orbits encircling a single antidot. This is shown by both a simple transport calculation based on a classical Kubo formula and an analysis of the Poincare surface of section at different magnetic field values. At low temperatures we observe weak 1/B-periodic oscillations superimposed on the classical maximum.
@article{arxiv.cond-mat/9807358,
title = {Skipping orbits and enhanced resistivity in large-diameter InAs/GaSb antidot lattices},
author = {J. Eroms and M. Zitzlsperger and D. Weiss and J. H. Smet and C. Albrecht and R. Fleischmann and M. Behet and J. De Boeck and G. Borghs},
journal= {arXiv preprint arXiv:cond-mat/9807358},
year = {2009}
}
Comments
4 pages, 4 Postscript figures, REVTeX, submitted to Phys Rev B