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Local and Nonlocal Two-Electron Tunneling Processes in a Cooper Pair Splitter

Ranni, Antti LU ; Mannila, Elsa T. ; Eriksson, Axel ; Golubev, Dmitry S. ; Pekola, Jukka P. and Maisi, Ville F. LU (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.

Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
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
2024-04-04 07:11:36
@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}},
}