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- Title
Thermoelectric current in a graphene Cooper pair splitter.
- Authors
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.
- 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. Thermoelectricity due to the interplay of the nonlocal Cooper pair splitting and the elastic co-tunneling in normal metal-superconductor-normal metal structure is predicted. Here, the authors observe the non-local Seebeck effect in a graphene-based Cooper pair splitting device.
- Subjects
COOPER pair; SEEBECK effect; THERMOELECTRIC power; ELECTRICAL conductors; THERMOELECTRIC generators; QUANTUM dots
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-020-20476-7