Electron transport through antidot superlattices in heterostructures: New magnetoresistance resonances in lattices with a large aspect ratio of antidot diameter to lattice periodE. B. Olshanetsky1, V. T. Renard2, 3, Z. D. Kvon1, J. C. Portal2, 3, 4 and J. M. Hartmann5
1 Institute of Semiconductor Physics - Novosibirsk 630090, Russia
2 GHMFL, CNRS - BP 166, F-38042, Grenoble, Cedex 9, France
3 INSA - 135 Avenue de Rangueil, F-31077, Toulouse Cedex 4, France
4 Institut Universitaire de France - Toulouse, France
5 CEA/Leti - F-38054, Grenoble, Cedex 9, France
received 31 August 2006; accepted in final form 22 September 2006
published online 13 October 2006
In the present work we have investigated the transport properties in a number of samples with square antidot lattices of different periods. In samples with lattice periods equal to 700 and 850 we have observed the conventional low-field commensurability magnetoresistance peaks consistent with the previous observations in GaAs/AlGaAs and samples with antidot lattices. In samples with a 600 lattice period a new series of well-developed magnetoresistance oscillations has been found beyond the last commensurability peak which are supposed to originate from periodic skipping orbits encircling an antidot with a particular number of bounds.
73.21.Cd - Superlattices.
73.23.Ad - Ballistic transport.
© EDP Sciences 2006