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 Quantized current of a hybrid single-electron transistor with superconducting leads and a normal-metal island


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We discuss the operation of the superconductor - insulator - normal-metal - insulator - superconductor SINIS turnstile. This voltage-biased hybrid single-electron transistor SET provides current quantization even with only one radio-frequency rf control parameter, namely the gate voltage of the single island. We give an overview of the main error mechanisms of the turnstile and consider its feasibility as a quantum current standard. We also present experimental results of pumping with the SINIS structure which show decreased leakage current compared to earlier measurements with the opposite NISIN structure.



Autor: Antti Kemppinen; Matthias Meschke; Mikko Möttönen; Dmitri V. Averin; Jukka P. Pekola

Fuente: https://archive.org/



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