Charge current in ferromagnet - triplet superconductor junctions

Abstract

We calculate the tunneling conductance spectra of a ferromagnetic metal / insulator / triplet superconductor from the reflection amplitudes using the Blonder-Tinkham-Klapwijk (BTK) formula. For the triplet superconductor, we assume one special $p$-wave order parameter, having line nodes, and two two dimensional $f$-wave order parameters with line nodes, breaking the time reversal symmetry. Also we examine nodeless pairing potentials. The evolution of the spectra with the exchange potential depends solely on the topology of the gap. The weak Andreev reflection within the ferromagnet results in the suppression of the tunneling conductance and eliminates the resonances due to the anisotropy of the pairing potential. The tunneling spectra splits asymmetrically with respect to $E=0$ under the influence of an external magnetic field. The results can be used to distinguish between the possible candidate pairing states of the superconductor Sr${}_2$RuO${}_4$.

15 pages with 8 figures

References in corpus (1)

• Tunneling spectra for ($d_{x^2-y^2}+is$)-wave superconductors versus tunneling spectra for ($d_{x^2-y^2}+i{d}_{xy}$)-wave superconductors

Cited by in corpus (7)

• Charge transport in two dimensional electron gas/superconductor junctions with Rashba spin-orbit coupling
• Resonant proximity effect in normal metal / diffusive ferromagnet / superconductor junctions
• Singlet superconductivity in single-crystal NiBi3 superconductor
• Tunneling current in triplet f-wave superconductors with horizontal lines of nodes
• Tunneling conductance in normal metal - triplet superconductor junction
• Theory of charge transport in ferromagnetic semiconductor/s-wave superconductor junction
• Ferromagnetic features on zero-bias conductance peaks in ferromagnet/insulator/superconductor junction