2008/06/20 by Paul H. Barsic, Oriol T. Valls
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Conductance #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Scattering #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.79.014502
published as Phys. Rev. B79, 014502 (2009) · 12 pages, including 8 figures
arxiv created 2008/06/20 · openalex publication_date 2009/01/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We evaluate the tunneling conductance of clean ferromagnet/superconductor junctions via a fully self-consistent numerical solution of the microscopic Bogoliubov-de Gennes equations. We present results for a relevant range of values of the Fermi wave-vector mismatch (FWM), the spin polarization, and the interfacial scattering strength. For nonzero spin polarization, the conductance curves vary nonmonotonically with FWM. The FWM dependence of our results is stronger than that previously found in non-self-consistent calculations since, in the self-consistent case, the effective scattering potential near the interface depends on the FWM. The dependence on interfacial scattering is monotonic. These results confirm that it is impossible to characterize both the FWM and the interfacial scattering by a single effective parameter and that analysis of experimental data via the use of such one-parameter models is unreliable.