Suppression of superconductivity in Nb by IrMn in IrMn/Nb bilayers

Handle URI:
http://hdl.handle.net/10754/552319
Title:
Suppression of superconductivity in Nb by IrMn in IrMn/Nb bilayers
Authors:
Wu, B. L.; Yang, Y. M.; Guo, Z. B.; Wu, Y. H.; Qiu, J. J.
Abstract:
Effect of antiferromagnet on superconductivity has been investigated in IrMn/Nb bilayers. Significant suppression of both transition temperature (Tc) and lower critical field (Hc1) of Nb is found in IrMn/Nb bilayers as compared to a single layer Nb of same thickness; the suppression effect is even stronger than that of a ferromagnet in NiFe/Nb bilayers. The addition of an insulating MgO layer at the IrMn-Nb interface nearly restores Tc to that of the single layer Nb, but Hc1 still remains suppressed. These results suggest that, in addition to proximity effect and magnetic impurity scattering, magnetostatic interaction also plays a role in suppressing superconductivity of Nb in IrMn/Nb bilayers. In addition to reduced Tc and Hc1, the IrMn layer also induces broadening in the transition temperature of Nb, which can be accounted for by a finite distribution of stray field from IrMn.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab
Citation:
Suppression of superconductivity in Nb by IrMn in IrMn/Nb bilayers 2013, 103 (15):152602 Applied Physics Letters
Publisher:
AIP Publishing
Journal:
Applied Physics Letters
Issue Date:
10-Oct-2013
DOI:
10.1063/1.4824891
Type:
Article
ISSN:
00036951
Additional Links:
http://scitation.aip.org/content/aip/journal/apl/103/15/10.1063/1.4824891
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, B. L.en
dc.contributor.authorYang, Y. M.en
dc.contributor.authorGuo, Z. B.en
dc.contributor.authorWu, Y. H.en
dc.contributor.authorQiu, J. J.en
dc.date.accessioned2015-05-05T14:30:50Zen
dc.date.available2015-05-05T14:30:50Zen
dc.date.issued2013-10-10en
dc.identifier.citationSuppression of superconductivity in Nb by IrMn in IrMn/Nb bilayers 2013, 103 (15):152602 Applied Physics Lettersen
dc.identifier.issn00036951en
dc.identifier.doi10.1063/1.4824891en
dc.identifier.urihttp://hdl.handle.net/10754/552319en
dc.description.abstractEffect of antiferromagnet on superconductivity has been investigated in IrMn/Nb bilayers. Significant suppression of both transition temperature (Tc) and lower critical field (Hc1) of Nb is found in IrMn/Nb bilayers as compared to a single layer Nb of same thickness; the suppression effect is even stronger than that of a ferromagnet in NiFe/Nb bilayers. The addition of an insulating MgO layer at the IrMn-Nb interface nearly restores Tc to that of the single layer Nb, but Hc1 still remains suppressed. These results suggest that, in addition to proximity effect and magnetic impurity scattering, magnetostatic interaction also plays a role in suppressing superconductivity of Nb in IrMn/Nb bilayers. In addition to reduced Tc and Hc1, the IrMn layer also induces broadening in the transition temperature of Nb, which can be accounted for by a finite distribution of stray field from IrMn.en
dc.publisherAIP Publishingen
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/apl/103/15/10.1063/1.4824891en
dc.rightsArchived with thanks to Applied Physics Lettersen
dc.titleSuppression of superconductivity in Nb by IrMn in IrMn/Nb bilayersen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInformation Storage Materials Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583en
dc.contributor.institutionData Storage Institute, Agency for Science, Technology and Research (A*STAR), 5 Engineering Drive 1, Singapore 117608en
kaust.authorGuo, Zaibingen
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