Determination of the electronic density of states near buried interfaces: Application to Co/Cu multilayers

A. Nilsson, J. Sthör, T. Wiell, M. Aldén, P. Bennich, N. Wassdahl, M.G. Samant, S.S.P. Parkin, N. Mårtensson, J. Nordgren, B. Johansson, Hans Lomholt Skriver

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Abstract

High-resolution L(3) x-ray absorption and emission spectra of Co and Cu in Co/Cu multilayers are shown to provide unique information on the occupied and unoccupied density of d states near buried interfaces. The d bands of both Co and Cu interfacial layers are shown to be considerably narrowed relative to the bulk metals, and for Cu interface layers the d density of states is found to be enhanced near the Fermi level. The experimental results are confirmed by self-consistent electronic structure calculations.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Volume54
Issue number4
Pages (from-to)2917-2921
ISSN0163-1829
DOIs
Publication statusPublished - 1996

Bibliographical note

Copyright (1996) American Physical Society.

Keywords

  • SPECTROSCOPY
  • EXTRA-ATOMIC RELAXATION
  • SPECTRA
  • FE
  • SYNCHROTRON-RADIATION
  • DICHROISM
  • X-RAY-FLUORESCENCE
  • ABSORPTION
  • EMISSION
  • NARROW-BAND METALS

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