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.
@article{arxiv.0803.1563,
title = {Quantized current of a hybrid single-electron transistor with superconducting leads and a normal-metal island},
author = {Antti Kemppinen and Matthias Meschke and Mikko Möttönen and Dmitri V. Averin and Jukka P. Pekola},
journal= {arXiv preprint arXiv:0803.1563},
year = {2015}
}
Comments
10 pages, 9 figures; Text edited, one new figure added, references updated