Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field

Details Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field

2008-11-04

arxiv.org/abs/0811.0494v2

Phys. Rev. B 78, 233311 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.233311

We present experimental results of high frequency quantized charge pumping through a quantum dot formed by the electric field arising from applied voltages in a GaAs/AlGaAs system in the presence of a perpendicular magnetic field B. Clear changes are observed in the quantized current plateaus as a function of applied magnetic field. We report on the robustness in the length of the quantized plateaus and improvements in the quantization as a result of the applied B field.

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