Year: 2001
Type: article
Abstract: We calculate the tunnelling conductance spectra of a ferromagnetic metal/insulator/triplet-superconductor junction from the reflection amplitudes using the Blonder-Tinkham-Klapwijk 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 tunnelling conductance and eliminates the resonances due to the anisotropy of the pairing potential. The tunnelling spectrum 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 .
Author: N Stefanakis
Institution: University of Crete
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2052211491