Far-infrared and transport properties of antidot arrays with broken symmetry

DOI to cite this document:: 10.5283/epub.10874

Lorke, A. ; Wimmer, S. ; Jager, B. ; Kotthaus, J. P. ; Wegscheider, Werner ; Bichler, Max

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Date of publication of this fulltext: 09 Nov 2009 13:10

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Abstract

We investigate the high- and low-frequency magnetotransport of a square antidot lattice with a triangular basis. In the longitudinal magnetoresistance ρxx(B) we observe higher-order commensurability features which reflect skipping orbits along the straight edges of the antidots. A magnetic field asymmetry in the four-probe resistance along the y-direction allows us to test basic symmetry ...