AB INITIO STUDY OF ELECTRIC TRANSPORT AND INTERLAYER EXCHANGE COUPLING IN Fe/Si/Fe SYSTEMS

نویسندگان

  • H. C. HERPER
  • P. WEINBERGER
  • L. SZUNYOGH
  • C. SOMMERS
  • P. ENTEL
چکیده

We present a first principles study of the magnetoresistance (MR) perpendicular to the planes of atoms and the interlayer exchange coupling (IEC) in Fe/Si/Fe trilayers. In both cases the dependence on the number of spacer layers is investigated, whereby the spacer thickness ranges between 3 and 21 Å for the IEC and extends to 33 Å for the MR in order to obtain the asymptotic behavior. Additionally, the influence of alloy formation at the interfaces on the MR and the IEC is examined. The calculations of the electronic structure are performed ∗Corresponding author: Tel. +43 1 58801 15834; fax: +43 1 58801 15898, email: [email protected]

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تاریخ انتشار 2003