Skipping orbits and enhanced resistivity in large-diameter InAs/GaSb antidot lattices

Details Skipping orbits and enhanced resistivity in large-diameter InAs/GaSb antidot lattices Skipping orbits and enhanced resistivity in large-diameter InAs/GaSb antidot lattices

1998-07-27

arxiv.org/abs/cond-mat/9807358v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 Postscript figures, REVTeX, submitted to Phys Rev B

Scientific paper

10.1103/PhysRevB.59.R7829

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.

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