Phonon Softening in Lanthanum under Pressure
- 3 December 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 31 (23) , 1393-1396
- https://doi.org/10.1103/physrevlett.31.1393
Abstract
Superconducting tunneling experiments on double-hexagonal close-packed La show that the ratio increases with pressure. The low-frequency part of the phonon density of states shifts to lower energies. Phonon softening is thus, at least partially, responsible for the strong increase of the superconducting with pressure.
Keywords
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