Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4824891
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.
Issue Date: 7-Oct-2013
Citation: Wu, B.L., Yang, Y.M., Guo, Z.B., Wu, Y.H., Qiu, J.J. (2013-10-07). Suppression of superconductivity in Nb by IrMn in IrMn/Nb bilayers. Applied Physics Letters 103 (15) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4824891
Abstract: Effect of antiferromagnet on superconductivity has been investigated in IrMn/Nb bilayers. Significant suppression of both transition temperature (T c) 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. © 2013 AIP Publishing LLC.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/83120
ISSN: 00036951
DOI: 10.1063/1.4824891
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