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

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

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
55 Downloads (Pure)


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.

Original languageEnglish
Article number207703
Pages (from-to)1-6
Number of pages6
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 11 Nov 2022
MoE publication typeA1 Journal article-refereed


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