https://doi.org/10.1140/epjb/s10051-023-00555-6
Regular Article - Solid State and Materials
Pure equal-spin and opposite-spin crossed Andreev reflection in spin-orbit-coupled graphene
1
National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, 210093, Nanjing, China
2
Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210093, Nanjing, China
Received:
27
April
2023
Accepted:
5
June
2023
Published online:
21
June
2023
We theoretically investigate the nonlocal transport in the ferromagnet/s-wave superconductor/Rashba spin-orbit coupled region/ferromagnet hybrid junction composed of the gapped graphene lattices. The equal-spin crossed Andreev reflection (ECAR) and the opposite-spin crossed Andreev reflection (OCAR) can be generated separately. The ECAR dominant transport and the OCAR dominant one appear for the junction with antiparallel and parallel magnetization of two ferromagnetic leads, respectively. The pure ECAR (OCAR) is achieved not only at the Dirac point but over a large voltage range, suggesting the highly efficient nonlocal splitting of the Cooper pairs with spin-triplet (spin-singlet) pairing correlations.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
