Anomalous Behavior of Surface Acoustic Waves in Cu/Nb Superlattices

Anomalous Behavior of Surface Acoustic Waves in Cu/Nb Superlattices

Brillouin-scattering measurements show an anomalous dip in the elastic constants of Nb/Cu superlattices for superlattice wavelengths of < = 100 A. This dip is correlated with changes in the electrical resistivity of the samples giving the first evidence that electronic effects are responsible for...

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Veröffentlicht in:Physical review letters 1982-01, Vol.48 (3), p.166-170
Hauptverfasser: Kueny, A., Grimsditch, M., Miyano, K., Banerjee, I., Falco, Charles M., Schuller, Ivan K.
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Sprache:eng
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Zusammenfassung:Brillouin-scattering measurements show an anomalous dip in the elastic constants of Nb/Cu superlattices for superlattice wavelengths of < = 100 A. 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. 18 ref.--AA
ISSN:0031-9007
DOI:10.1103/PhysRevLett.48.166