Local and Nonlocal Two-Electron Tunneling Processes in a Cooper Pair Splitter
(2022) In Physical Review Letters 129(20).- Abstract
We measure the rates and coupling coefficients for local Andreev, nonlocal Andreev, and elastic cotunneling processes. The nonlocal Andreev process, giving rise to Cooper pair splitting, exhibits the same coupling coefficient as the elastic cotunneling whereas the local Andreev process is more than 2 orders of magnitude stronger than the corresponding nonlocal one. Theory estimates describe the findings and explain the large difference in the nonlocal and local coupling arising from competition between electron diffusion in the superconductor and tunnel junction transparency.
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https://lup.lub.lu.se/record/1a826e43-e9a4-4254-83b9-3e87590ba3d0
- author
- Ranni, Antti LU ; Mannila, Elsa T. ; Eriksson, Axel ; Golubev, Dmitry S. ; Pekola, Jukka P. and Maisi, Ville F. LU
- organization
- publishing date
- 2022-11
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 129
- issue
- 20
- article number
- 207703
- publisher
- American Physical Society
- external identifiers
-
- pmid:36462007
- scopus:85141917232
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.129.207703
- language
- English
- LU publication?
- yes
- id
- 1a826e43-e9a4-4254-83b9-3e87590ba3d0
- date added to LUP
- 2023-01-02 14:19:15
- date last changed
- 2024-07-11 16:55:41
@article{1a826e43-e9a4-4254-83b9-3e87590ba3d0, abstract = {{<p>We measure the rates and coupling coefficients for local Andreev, nonlocal Andreev, and elastic cotunneling processes. The nonlocal Andreev process, giving rise to Cooper pair splitting, exhibits the same coupling coefficient as the elastic cotunneling whereas the local Andreev process is more than 2 orders of magnitude stronger than the corresponding nonlocal one. Theory estimates describe the findings and explain the large difference in the nonlocal and local coupling arising from competition between electron diffusion in the superconductor and tunnel junction transparency.</p>}}, author = {{Ranni, Antti and Mannila, Elsa T. and Eriksson, Axel and Golubev, Dmitry S. and Pekola, Jukka P. and Maisi, Ville F.}}, issn = {{0031-9007}}, language = {{eng}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Local and Nonlocal Two-Electron Tunneling Processes in a Cooper Pair Splitter}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.129.207703}}, doi = {{10.1103/PhysRevLett.129.207703}}, volume = {{129}}, year = {{2022}}, }