Naslov (eng)

Influence of different band masses on ballistic charge transport in ferromagnet–superconductor–ferromagnet trilayers

Autor

Popović, Z.
Božović, Miloš
Radović, Z.

Opis (eng)

Abstract: We study transport properties of clean FISIF double-barrier junctions consisting of metallic or semiconducting ferromagnets (F), a superconductor (S), and insulating interfaces (I). We solve the scattering problem based on the Bogoliubov–de Gennes equation and calculate differential conductance for arbitrary interface transparency, different effective band masses and Fermi wave vectors in the conductors. We analyze size and coherence effects that characterize ballistic transport: subgap transmission and geometrical oscillations of the conductance. We find that different band masses, as well as different Fermi wave vectors, affect the transport properties in a way similar to interfaces of a finite transparency. In all these cases, charge transport is reduced to resonant tunneling through the quasi-bound states in the superconducting film.

Opis (eng)

The work was supported by the Serbian Ministryof Science, Project No.141014.

Jezik

engleski

Datum

2009

Licenca

© All rights reserved

Predmet

Keywords: Spin-polarized ballistic transport; Superconductor–semiconducting; ferromagnet tunnel junctions

Deo kolekcije (1)

o:28218

Ekonomski fakultet