A theoretical study of tunnelling conductance in ferromagnet/ PrOs4Sb12 junctions
Department of Physics, Xiamen University, Xiamen 361005, P.R. China
Corresponding author: a email@example.com
Revised: 9 January 2005
Published online: 20 April 2005
The tunnelling conductance spectra of ferromagnet/PrOs4Sb12 junctions are theoretically investigated by using the Blonder-Tinkham-Klapwijk theory. Three pairs of possible candidate for the pairing symmetry of superconducting energy gap of the recently discovered heavy-fermion unconventional superconductor PrOs4Sb12 are chosen for calculation. We have studied the spin-polarization effect on the conductance spectra, with respect to different strength of ferromagnetism of the ferromagnet and different strength of the interface barrier. Moreover, we have discussed the influence of nodal structures of the superconducting energy gap on the conductance spectra. Different features of the tunnelling conductance spectra were got, which may serve as useful theoretical comparisons for future experiments.
PACS: 74.50.+r – Tunneling phenomena; point contacts, weak links, Josephson effects / 74.70.Tx – Heavy-fermion superconductors / 74.20.Rp – Pairing symmetries (other than s-wave)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005