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Spin-sensitive long-range proximity effect in ferromagnet/spin-triplet-superconductor bilayers

Annunziata, Gaetano; Cuoco, Mario; Noce, Canio; Sudbø, Asle; Linder, Jacob
Journal article, Peer reviewed
Accepted version
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annunziataspinsensitive.pdf (569.9Kb)
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http://hdl.handle.net/11250/2455180
Utgivelsesdato
2011
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  • Publikasjoner fra CRIStin - NTNU [19694]
Originalversjon
Physical Review B. Condensed Matter and Materials Physics. 2011, 83 (6), .   10.1103/PhysRevB.83.060508
Sammendrag
The discovery of noncentrosymmetric superconductors, such as CePt3Si, and chiral superconductors, such as Sr2RuO4, calls for experimental methods to identify the presence of spin-triplet pairing. We here demonstrate a method which accomplishes this in an appealingly simple manner: a spin-sensitive proximity effect in a ferromagnet/triplet superconductor bilayer. It is shown how the orientation of the field can be used to unambiguously distinguish between different spin-triplet states. Moreover, the proximity effect becomes long ranged in spite of the presence of an exchange field and even without any magnetic inhomogeneities, in contrast to conventional S/F junctions. Our results can be verified by scanning-tunneling-microscopy spectroscopy and can be useful as a tool to characterize the pairing state in unconventional superconducting materials. ©2011 American Physical Society
Utgiver
American Physical Society
Tidsskrift
Physical Review B. Condensed Matter and Materials Physics

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