University of Cambridge > Talks.cam > Semiconductor Physics Group Seminars > Towards Single-electron Pumping with Graphene Quantum Hall Antidots (SP Workshop)

Towards Single-electron Pumping with Graphene Quantum Hall Antidots (SP Workshop)

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If you have a question about this talk, please contact Teri Bartlett.

The accurate redefinition of the basic SI unit, the Ampere, in terms of the fundamental elementary charge, e, is important and meaningful in the area of quantum metrology. Single-electron pumping can generate an electric current, which provides a powerful tool in the research of metrology.

This work presents a new idea for the realization of a fast and accurate quantized charge pumping technology with graphene quantum antidots. It reviews literatures on single-electron pumping metrology background, quantum Hall antidots and graphene unique properties making it a promising material to realize antidots single-electron pumps, specifically in relation to future work in our group. In addition, design, fabrication and basic experiment methods are introduced. Finally, some results on current progress towards the goal of single-electron charge pumping with graphene quantum Hall antidots are also reported.

This talk is part of the Semiconductor Physics Group Seminars series.

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