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

Wright, S J*; Blumenthal, M D; Gumbs, G*; Thorn, A L*; Pepper, M*; Janssen, T J B M; Holmes, S N*; Anderson, D*; Jones, G A C*; Nicoll, C A*; Ritchie, D A* (2008) Enhanced current quantization in high frequency electron pumps in a perpendicular magnetic field. Phys. Rev. B, 78 (23). 233311

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Abstract

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.

Item Type: Article
Subjects: Quantum Phenomena
Quantum Phenomena > Nanophysics
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4338

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