Publication: Pair breaking effects on upper critical fields in ferromagnet/superconductor layered structures
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Issued Date
2007
Resource Type
File Type
application/pdf
ISSN
9214534
Other identifier(s)
2-s2.0-34247255579
Rights Holder(s)
Scopus
Bibliographic Citation
Physica C: Superconductivity and its Applications. Vol 455, (2007), p.39-45
Suggested Citation
Rachataruangsit T., Yoksan S. Pair breaking effects on upper critical fields in ferromagnet/superconductor layered structures. Physica C: Superconductivity and its Applications. Vol 455, (2007), p.39-45. doi:10.1016/j.physc.2007.02.003 Retrieved from: https://hdl.handle.net/20.500.14740/4598
Author(s)
Abstract
The influence of magnetic and spin-orbit impurity scattering on the upper critical fields Hc2 in ferromagnet/superconductor (F/S) hybrid structures is theoretically investigated. The generalized Usadel equations which are a pair of coupled equations containing additional spin-orbit and magnetic impurity scattering are shown to be decoupled in spite of the coupling interaction between the spin exchange field and the spin-orbit interaction in the F layer. The temperature dependence of the parallel upper critical field in the F/S bilayer is shown to be less prominent in the presence of the spin-orbit and the spin-flip scattering processes. The interplay between the zero- and pi-phases is analyzed in the case of the F/S multilayers. The pi-phase formation is found to be feasible through the strong oscillation of the zero temperature upper critical fields versus the thickness of the ferromagnetic layer. Our results which are valid in wide range of parameters may be very important for comparison with experimental data. © 2007 Elsevier B.V. All rights reserved.