Anomalous Behavior of Surface Acoustic Waves in Cu/Nb Superlattices
- 18 January 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 48 (3), 166-170
- https://doi.org/10.1103/physrevlett.48.166
Abstract
Brillouin-scattering measurements show an anomalous dip in the elastic constants of Nb/Cu superlattices for superlattice wavelengths of ≲ 100 Å. This dip is correlated with changes in the electrical resistivity of the samples giving the first evidence that electronic effects are responsible for phonon softening in these materials.Keywords
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