@article{d5cfb4c948be432b902bf9260fc224d3,
title = "Quenching rattling modes in skutterudites with pressure",
abstract = "A high-pressure study of the lattice dynamics in the filled skutterudite Eu0.84Fe4Sb12 was carried out by means of x-ray powder diffraction and nuclear inelastic scattering. The anharmonicity of particular phonon modes was characterized by mode and element specific Gr{\"u}neisen parameters. The large anharmonicity of the rattling optical mode that is hybridized with the acoustical phonons at ambient pressure is reduced at high pressure as the phonon modes decouple. This result suggests that anharmonic coupling between acoustic and optical phonon modes plays a central role in the reduced thermal conductivity.",
author = "I. Sergueev and K. Glazyrin and I. Kantor and McGuire, {M. A.} and Chumakov, {A. I.} and B. Klobes and Sales, {B. C.} and Hermann, {R. P.}",
note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",
year = "2015",
month = jun,
day = "15",
doi = "10.1103/PhysRevB.91.224304",
language = "English",
volume = "91",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1098-0121",
number = "22",
}