Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers

A. Ruotolo; G. P. Pepe; C. Bell; C. W. Leung; M. G. Blamire

doi:10.1088/0953-2048/18/6/022

Author(s)

A. Ruotolo
G. P. Pepe
C. Bell
C. W. Leung
M. G. Blamire

Detail(s)

Original language	English
Pages (from-to)	921-926
Journal / Publication	Superconductor Science and Technology
Volume	18
Issue number	6
Publication status	Published - 1 Jun 2005
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1088/0953-2048/18/6/022 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-18744414756&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(5385cdea-f9e6-4927-a6b9-991d8f2fe90b).html

Abstract

The dependence of the critical Josephson current (I_C) and magnetoresistance (MR) on the relative orientation of the ferromagnetic layers is investigated in current perpendicular to plane (CPP) measurements of superconductor/ferromagnetic (S/F) multilayers. Two different Cu _xNi_1-x alloys were chosen so that alternate F-layers reversed at different applied magnetic fields and that the ferromagnetic coherence length was of the order of several nanometres. These structures show a significant CPP high-bias MR, which enables the magnetic state of the devices to be determined directly. We found that I_C is substantially larger when the adjacent F-layers are aligned antiparallel compared to the case of parallel orientation. Since in a pseudo-spin-valve structure the relative F-layer orientation is approximately parallel for zero applied magnetic field, I_C can experience an enhancement when a magnetic field is applied in the plane of the junction. The maximum change of I_C corresponds to the maximum change of MR. © 2005 IOP Publishing Ltd.

Citation Format(s)

[ RIS ] [ BibTeX ]

Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers. / Ruotolo, A.; Pepe, G. P.; Bell, C. et al.
In: Superconductor Science and Technology, Vol. 18, No. 6, 01.06.2005, p. 921-926.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Ruotolo, A, Pepe, GP, Bell, C, Leung, CW & Blamire, MG 2005, 'Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers', Superconductor Science and Technology, vol. 18, no. 6, pp. 921-926. https://doi.org/10.1088/0953-2048/18/6/022

Ruotolo, A., Pepe, G. P., Bell, C., Leung, C. W., & Blamire, M. G. (2005). Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers. Superconductor Science and Technology, 18(6), 921-926. https://doi.org/10.1088/0953-2048/18/6/022

Ruotolo A, Pepe GP, Bell C, Leung CW, Blamire MG. Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers. Superconductor Science and Technology. 2005 Jun 1;18(6):921-926. doi: 10.1088/0953-2048/18/6/022

Ruotolo, A. ; Pepe, G. P. ; Bell, C. et al. / Modulation of the dc Josephson current in pseudo-spin-valve Josephson multilayers. In: Superconductor Science and Technology. 2005 ; Vol. 18, No. 6. pp. 921-926.