TY  - JOUR
AU  - Parshin, P. P.
AU  - Alekseev, P. A.
AU  - Nemkovskiy, Kirill
AU  - Persson, Jörg
AU  - Chumakov, A. I.
AU  - Rüffer, R.
TI  - Phonons and the electronic gap in FeSi
JO  - Journal of experimental and theoretical physics
VL  - 118
IS  - 2
SN  - 1090-6509
CY  - Heidelberg [u.a.]
PB  - Springer
M1  - FZJ-2015-01488
SP  - 242 - 252
PY  - 2014
AB  - The partial phonon densities of states of iron atoms in the intermetallic compound FeSi have been measured in the temperature range 46–297 K using nuclear resonant inelastic scattering of synchrotron radiation. A significant phonon softening with increasing temperature has been established. The greatest phonon softening for iron atoms is shown to occur in the region of long-wavelength acoustic phonons, for the acoustic branches near the boundary of the Brillouin zone, and for the low-lying weakly dispersive optical branches. The results obtained are analyzed in terms of the views that relate the change in the phonon density of states of iron atoms to the temperature evolution of the electronic density of state for the compound.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000338339400009
DO  - DOI:10.1134/S1063776114020034
UR  - https://juser.fz-juelich.de/record/187999
ER  -