Thermoelectric current in a graphene Cooper pair splitter

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-12
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Language
en
Pages
7
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Nature Communications, Volume 12, issue 1
Abstract
Generation of electric voltage in a conductor by applying a temperature gradient is a fundamental phenomenon called the Seebeck effect. This effect and its inverse is widely exploited in diverse applications ranging from thermoelectric power generators to temperature sensing. Recently, a possibility of thermoelectricity arising from the interplay of the non-local Cooper pair splitting and the elastic co-tunneling in the hybrid normal metal-superconductor-normal metal structures was predicted. Here, we report the observation of the non-local Seebeck effect in a graphene-based Cooper pair splitting device comprising two quantum dots connected to an aluminum superconductor and present a theoretical description of this phenomenon. The observed non-local Seebeck effect offers an efficient tool for producing entangled electrons.
Description
| openaire: EC/H2020/670743/EU//OMT | openaire: EC/H2020/722923/EU//QuDeT
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Citation
Tan, Z B, Laitinen, A, Kirsanov, N S, Galda, A, Vinokur, V M, Haque, M, Savin, A, Golubev, D S, Lesovik, G B & Hakonen, P J 2021, ' Thermoelectric current in a graphene Cooper pair splitter ', Nature Communications, vol. 12, no. 1, 138 . https://doi.org/10.1038/s41467-020-20476-7