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Spin-orbit coupling suppression and singlet-state blocking of spin-triplet Cooper pairs

dc.contributor.authorKOMORI, Sachio
dc.contributor.authorDEVINE-STONEMAN, James
dc.contributor.authorOHNISHI, Kohei
dc.contributor.authorYANG, Guang
dc.contributor.authorDEVIZOROVA, Zhanna
dc.contributor.authorMIRONOV, Sergey
dc.contributor.authorMONTIEL, Xavier
dc.contributor.authorOLDE OLTHOF, Linde
dc.contributor.authorCOHEN, Lesley
dc.contributor.authorKUREBAYASHI, Hidekazu
dc.contributor.authorBLAMIRE, Mark
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBUZDIN, Alexandre
dc.contributor.authorROBINSON, Jason
dc.date.issued2021-01-13
dc.identifier.issn2375-2548
dc.description.abstractEnAn inhomogeneous magnetic exchange field at a superconductor/ferromagnet interface converts spin-singlet Cooper pairs to a spin-polarized triplet state. Although the decay envelope of triplet pairs within ferromagnetic materials is well studied, little is known about their decay in nonmagnetic metals and superconductors and, in particular, in the presence of spin-orbit coupling (SOC). Here, we investigate devices in which singlet and triplet supercurrents propagate into the s-wave superconductor Nb. In the normal state of Nb, triplet supercurrents decay over a distance of 5 nm, which is an order of magnitude smaller than the decay of spin-singlet pairs due to the SOC. In the superconducting state of Nb, triplet supercurrents are not able to couple with the singlet wave function and are thus blocked by the absence of available equilibrium states in the singlet gap. The results offer insight into the dynamics between s-wave singlet and s-wave triplet states.
dc.language.isoen
dc.publisherAmerican Association for the Advancement of Science (AAAS)
dc.title.enSpin-orbit coupling suppression and singlet-state blocking of spin-triplet Cooper pairs
dc.typeArticle de revue
dc.identifier.doi10.1126/sciadv.abe0128
dc.subject.halPhysique [physics]
bordeaux.journalScience Advances
bordeaux.pageeabe0128
bordeaux.volume7
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-03271863
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03271863v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Science%20Advances&rft.date=2021-01-13&rft.volume=7&rft.issue=3&rft.spage=eabe0128&rft.epage=eabe0128&rft.eissn=2375-2548&rft.issn=2375-2548&rft.au=KOMORI,%20Sachio&DEVINE-STONEMAN,%20James&OHNISHI,%20Kohei&YANG,%20Guang&DEVIZOROVA,%20Zhanna&rft.genre=article


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