From spin-polarized interfaces to giant magnetoresistance in organic spin valves

Deniz Cakir, D.M. Otalvaro Gutierrez, G. Brocks

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We calculate the spin-polarized electronic transport through a molecular bilayer spin valve from first principles, and establish the link between the magnetoresistance and the spin-dependent interactions at the metal-molecule interfaces. The magnetoresistance of a Fe| bilayer-C 70 | Fe spin valve attains a high value of 70% in the linear-response regime, but it drops sharply as a function of the applied bias. The current polarization has a value of 80% in linear response and also decreases as a function of bias. Both these trends can be modeled in terms of prominent spin-dependent Fe| C 70 interface states close to the Fermi level, unfolding the potential of spinterface science to control and optimize spin currents
Original languageUndefined
Article number115407
Pages (from-to)115407/1-115407/5
Number of pages5
JournalPhysical review B: Condensed matter and materials physics
Volume89
Issue number115407
DOIs
Publication statusPublished - 2014

Keywords

  • METIS-306424
  • IR-94964

Cite this