Andreev tunneling in charge pumping with SINIS turnstiles

Details Andreev tunneling in charge pumping with SINIS turnstiles Andreev tunneling in charge pumping with SINIS turnstiles

2011-06-20

arxiv.org/abs/1106.3918v2

EPL 96, 37008 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures, 1 table Published version with various improvements to figures and text

Scientific paper

10.1209/0295-5075/96/37008

We present measurements on hybrid single-electron turnstiles with superconducting leads contacting a normal island (SINIS). We observe Andreev tunneling of electrons influencing the current plateau characteristics of the turnstiles under radio-frequency pumping. The data is well accounted for by numerical simulations. We verify the dependence of the Andreev tunneling rate on the turnstile's charging energy. Increasing the charging energy effectively suppresses the Andreev current.

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