RT info:eu-repo/semantics/article
T1 Nonadiabatic Kohn Anomaly in Heavily Boron-Doped Diamond
A1 Serrano Gutiérrez, Jorge
AB We report evidence of a nonadiabatic Kohn anomaly in boron-doped diamond, using a joint theoretical and experimental analysis of the phonon dispersion relations. We demonstrate that standard calculations of phonons using density-functional perturbation theory are unable to reproduce the dispersion relations of the high-energy phonons measured by high-resolution inelastic x-ray scattering. On the contrary, by taking into account nonadiabatic effects within a many-body field-theoretic framework, we obtain excellent agreement with our experimental data. This result indicates a breakdown of the Born-Oppenheimer approximation in the phonon dispersion relations of boron-doped diamond.
PB American Physical Society
YR 2017
FD 2017
LK https://uvadoc.uva.es/handle/10324/65230
UL https://uvadoc.uva.es/handle/10324/65230
LA eng
NO Phys. Rev. Lett. 119, 017001 (2017)
DS UVaDOC
RD 22-nov-2024