Title

High-Energy Phonon Confinement In Nanoscale Metallic Multilayers

Abstract

The Fe-projected vibrational density of states g (E) in nanoscale F 57 e/M multilayers, where M=Cr, Co, Cu, Pd, or Ag was measured by nuclear resonant inelastic x-ray scattering. With decreasing Fe thickness, the high-energy phonon peak of Fe near 36 meV is suppressed for the "soft" metals Ag, Pd, and Cu, but much less so for the "hard" metals Co and Cr. This effect is attributed to Fe phonon confinement and interface localization due to an energy mismatch between g (E) of M and of Fe. © 2008 The American Physical Society.

Publication Date

4-8-2008

Publication Title

Physical Review B - Condensed Matter and Materials Physics

Volume

77

Issue

16

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevB.77.165410

Socpus ID

42049100579 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/42049100579

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