Nonlocal thermoelectricity in a Cooper-pair splitter

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2019
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Governale, Michele
Kohler, Sigmund
Giazotto, Francesco
Braggio, Alessandro
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Physical Review B. 2019, 99(7), 075429. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.99.075429
Zusammenfassung

We investigate the nonlocal thermoelectric transport in a Cooper-pair splitter based on a double-quantum-dot-superconductor three-terminal hybrid structure. We find that the nonlocal coupling between the superconductor and the quantum dots gives rise to nonlocal thermoelectric effects which originate from the nonlocal particle-hole breaking of the system. We show that Cooper-pair splitting induces the generation of a thermo-current in the superconducting lead without any transfer of charge between the two normal metal leads. Conversely, we show a nonlocal heat exchange between the normal leads mediated by non-local Andreev reflection. We discuss the influence of finite Coulomb interaction and study under which conditions nonlocal power generation becomes possible, and when the Cooper-pair splitter can be employed as a cooling device.

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ISO 690HUSSEIN, Robert, Michele GOVERNALE, Sigmund KOHLER, Wolfgang BELZIG, Francesco GIAZOTTO, Alessandro BRAGGIO, 2019. Nonlocal thermoelectricity in a Cooper-pair splitter. In: Physical Review B. 2019, 99(7), 075429. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.99.075429
BibTex
@article{Hussein2019Nonlo-42699.2,
  year={2019},
  doi={10.1103/PhysRevB.99.075429},
  title={Nonlocal thermoelectricity in a Cooper-pair splitter},
  number={7},
  volume={99},
  issn={2469-9950},
  journal={Physical Review B},
  author={Hussein, Robert and Governale, Michele and Kohler, Sigmund and Belzig, Wolfgang and Giazotto, Francesco and Braggio, Alessandro},
  note={Article Number: 075429}
}
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2019-02-20 14:16:09
Veröffentlichung in Physical Review B
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