Andreev tunneling in charge pumping with SINIS turnstiles

T. Aref; V.F. Maisi; M.V. Gustafsson; P. Delsing; J.P. Pekola

doi:10.1209/0295-5075/96/37008

Andreev tunneling in charge pumping with SINIS turnstiles

T. Aref, V.F. Maisi, M.V. Gustafsson, P. Delsing, J.P. Pekola

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

19 Citations (Scopus)

Abstract

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.

Original language	English
Article number	37008
Number of pages	6
Journal	Europhysics Letters
Volume	96
Issue number	3
DOIs	https://doi.org/10.1209/0295-5075/96/37008
Publication status	Published - 2011
MoE publication type	A1 Journal article-refereed

Keywords

superconductivity
single electron devices
Andreev effect
proximity effects

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abstract = "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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AU - Aref, T.

AU - Maisi, V.F.

AU - Gustafsson, M.V.

AU - Delsing, P.

AU - Pekola, J.P.

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - superconductivity

KW - single electron devices

KW - Andreev effect

KW - proximity effects

U2 - 10.1209/0295-5075/96/37008

DO - 10.1209/0295-5075/96/37008

M3 - Article

SN - 0295-5075

VL - 96

JO - Europhysics Letters

JF - Europhysics Letters

IS - 3

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Andreev tunneling in charge pumping with SINIS turnstiles

Abstract

Keywords

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