Höhberger, E. M. and Lorke, A. and Wegscheider, Werner and Bichler, Max
Adiabatic pumping of two-dimensional electrons in a ratchet-type lateral superlattice.
Applied Physics Letters 78 (19), pp. 2905-2907.
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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 ...
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