Physics – Condensed Matter – Materials Science
Scientific paper
2004-05-19
Physics
Condensed Matter
Materials Science
9 pages, 6 figures, to appear in PRB
Scientific paper
10.1103/PhysRevB.70.045417
The scattering-based approach for calculating the ballistic conductance of open quantum systems is generalized to deal with magnetic transition metals as described by ultrasoft pseudo-potentials. As an application we present quantum-mechanical conductance calculations for monatomic Co and Ni nanowires with a magnetization reversal. We find that in both Co and Ni nanowires, at the Fermi energy, the conductance of $d$ electrons is blocked by a magnetization reversal, while the $s$ states (one per spin) are perfectly transmitted. $d$ electrons have a non-vanishing transmission in a small energy window below the Fermi level. Here, transmission is larger in Ni than in Co.
Corso Andrea Dal
Smogunov Alexander
Tosatti Erio
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