This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1134/S1063776114020034 in citations.
Phonons and the electronic gap in FeSi
Phonons and the electronic gap in FeSi
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 grea...
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Personal Name(s): | Parshin, P. P. (Corresponding Author) |
---|---|
Alekseev, P. A. / Nemkovskiy, Kirill / Persson, Jörg / Chumakov, A. I. / Rüffer, R. | |
Contributing Institute: |
JCNS-FRM-II; JCNS-FRM-II JARA-FIT; JARA-FIT Streumethoden; PGI-4 Streumethoden; JCNS-2 |
Published in: | Journal of experimental and theoretical physics, 118 (2014) 2, S. 242 - 252 |
Imprint: |
Heidelberg [u.a.]
Springer
2014
|
DOI: |
10.1134/S1063776114020034 |
Document Type: |
Journal Article |
Research Program: |
JCNS |
Subject (ZB): | |
Publikationsportal JuSER |
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. |