Adiabatic pumping of two-dimensional electrons in a ratchet-type lateral superlattice

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.11174

Höhberger, E. M. ; Lorke, A. ; Wegscheider, Werner ; Bichler, Max

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Veröffentlichungsdatum dieses Volltextes: 30 Nov 2009 13:42

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Zusammenfassung

A pair of interdigitated gates, interlacing off center, is used to generate a widely tunable one-dimensional lateral superlattice in the two-dimensional electron gas at a GaAs/AlGaAs heterointerface. Magnetotransport measurements with statically biased gates demonstrate that the conduction-band modulation is strongly influenced by higher harmonics, thus allowing the realization of both symmetric ...