Predictions of the phonon behaviour at high pressure are included in the recent first-principle calculation of the phonons in uranium. Experiments up to 20 GPa using inelastic x-ray scattering confirm these predictions. Extending the theory explains the complex phase diagram of uranium as a function of temperature and pressure, which includes the interplay between a charge-density wave and superconductivity. Observations extending back 40 years can be interpreted on the basis of correctly including a narrow band of 5f states and the associated strong electron-phonon coupling.
RAYMOND S.;
BOUCHET J.;
LANDER G.H.;
LE TACON M.;
GABARINO G.;
HOESCH M.;
RUEFF J.P.;
KRISCH M.;
LASHLEY J. C.;
SCHULZE R.;
ALBERS R.C.;
2011-10-07
AMER PHYSICAL SOC
JRC60529
0031-9007,
http://prl.aps.org/abstract/PRL/v107/i13/e136401,
https://publications.jrc.ec.europa.eu/repository/handle/JRC60529,
10.1103/PhysRevLett.107.136401,
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