Abstract
In the framework of scattering theory, we study the tunneling conductance in a system including two junctions, ferromagnetic metal/normal metal/ferromagnetic superconductor, where ferromagnetic superconductor is in spin-singlet -wave pairing state. The non-magnetic normal metal is placed in the intermediate layer with the thickness () which varies from 1 nm to 10000 nm. The interesting result which we have found is the existence of oscillations in conductance curves. The period of oscillations is independent of FS and FN exchange field while it depends on . The obtained results can serve as a useful tool to determine the kind of pairing symmetry in ferromagnetic superconductors.
Highlights
In this paper we have studied tunneling conductance in a two-junction system with structure of ferromagnetic metal/normal metal/ferromagnetic superconductor
Dahal et al [9], based on interaction of electrons mediated by localized spins have shown that the pair symmetry in UGe2 is spin-singlet s-wave state. Other pairing symmetries such as spin triplet opposite spin pairing (OSP) state and spin triplet equal spin pairing (ESP) state are suggested for ferromagnetic superconductors [12, 13]
We theoretically study tunneling conductance in ferromagnetic metal/normal metal/ferromagnetic superconductor (FM/NM/FSc) double junction where ferromagnetic superconductor (FS) is in spin-singlet s-wave pairing (SWP) state and has an exchange field hs
Summary
In the framework of scattering theory, we study the tunneling conductance in a system including two junctions, ferromagnetic metal/normal metal/ferromagnetic superconductor, where ferromagnetic superconductor is in spin-singlet s-wave pairing state. The non-magnetic normal metal is placed in the intermediate layer with the thickness (L) which varies from 1 nm to 10000 nm. The interesting result which we have found is the existence of oscillations in conductance curves. The period of oscillations is independent of FS and FN exchange field while it depends on L. The obtained results can serve as a useful tool to determine the kind of pairing symmetry in ferromagnetic superconductors
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