Magnetic Properties of bcc-Fe(001)/C60 Interfaces for Organic Spintronics

T. Lan Ahn Tran, Deniz Cakir, P.K.J. Wong, A.B. Preobrajenski, Gerardus H.L.A. Brocks, Wilfred Gerard van der Wiel, Machiel Pieter de Jong

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Abstract

The magnetic structure of the interfaces between organic semiconductors and ferromagnetic contacts plays a key role in the spin injection and extraction processes in organic spintronic devices. We present a combined computational (density functional theory) and experimental (X-ray magnetic circular dichroism) study on the magnetic properties of interfaces between bcc-Fe(001) and C-60 molecules. C-60 is an interesting candidate for application in organic spintronics due to the absence of hydrogen atoms and the associated hyperfine fields. Adsorption of C-60 on Fe(001) reduces the magnetic moments on the top Fe layers by similar to 6%, while inducing an antiparrallel magnetic moment of similar to-0.2 mu(B) on C-60. Adsorption of C-60 on a model ferromagnetic substrate consisting of three Fe monolayers on W(001) leads to a different structure but to very similar interface magnetic properties.
Original languageUndefined
Pages (from-to)837-841
Number of pages5
JournalACS applied materials & interfaces
Volume5
Issue number3
DOIs
Publication statusPublished - 10 Jan 2013

Keywords

  • EWI-24405
  • IR-89201
  • METIS-298629

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