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Article Dans Une Revue Physical Review Letters Année : 2006

Lattice Dynamics of Molybdenum at High Pressure.

Résumé

We have determined the lattice dynamics of molybdenum at high pressure to 37 GPa using high-resolution inelastic x-ray scattering. Over the investigated pressure range, we find a significant decrease in the H-point phonon anomaly. We also present calculations based on density functional theory that accurately predict this pressure dependence. Based on these results, we infer that the likely explanation for the H-point anomaly in molybdenum is strong electron-phonon coupling, which decreases upon compression due to the shift of the Fermi level with respect to the relevant electronic bands.
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Dates et versions

hal-00022539 , version 1 (11-04-2006)

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Daniel L. Farber, Michael Krisch, Daniele Antonangeli, Alexandre Beraud, James Badro, et al.. Lattice Dynamics of Molybdenum at High Pressure.. Physical Review Letters, 2006, 96, pp.115502. ⟨10.1103/PhysRevLett.96.115502⟩. ⟨hal-00022539⟩
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