Strong phonon anomalies and Fermi surface nesting of simple cubic Polonium

作者：Belabbes A; Zaoui A^*; Ferhat M

来源：Solid State Communications, 2010, 150(47-48): 2337-2340.

DOI：10.1016/j.ssc.2010.10.001

• Metals
• Phonons

The unknown lattice dynamics of simple cubic Polonium is calculated using first-principles density-functional perturbation theory with pseudopotentials and a plane-wave basis set. We notice several phonon anomalies, in particular along major symmetry directions namely M-R, R-Gamma, Gamma-M, M-X, and X-Gamma. The analysis of the Fermi surface strongly suggests that the observed phonon anomalies are Kohn anomalies arising from strong Fermi surface nesting.

• 出版日期2010-12