Title :
Theoretical Study of Point-Contact Andreev Reflection Spectroscopy for Ferromagnetic Metal/Insulator/D-Wave Superconductor Junctions
Author :
Ohtori, H. ; Imamura, H.
Author_Institution :
Inst. of Appl. Phys., Univ. of Tsukuba, Tsukuba, Japan
Abstract :
This paper theoretically analyzed Andreev reflection in the ferromagnetic metal/insulator/d-wave superconductor junctions using the Bogoliubov-de Gennes equations. We calculated the total tunneling conductance spectra and found that the conductance suppression due to the insulator depends on the relation between the exchange energy and the Fermi wave number difference. Our results showed the feasibility of the spin polarization measurement with high-Tc superconductivity using the same system of the Point-contact Andreev reflection (PCAR) measurement.
Keywords :
Fermi level; d-wave superconductivity; electrical conductivity; ferromagnetic materials; high-temperature superconductors; point contact spectroscopy; spin polarised transport; superconductive tunnelling; Bogoliubov-de Gennes equations; Fermi wave number difference; PCAR measurement; conductance suppression; exchange energy; ferromagnetic metal-insulator-d-wave superconductor junctions; high-Tc superconductivity; point-contact Andreev reflection measurement; point-contact Andreev reflection spectroscopy; spin polarization measurement; tunneling conductance spectra; Electric potential; Frequency modulation; Insulators; Josephson junctions; Junctions; Metals; Temperature measurement; PLEASE PROVIDE KEYWORDS;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2206575
