Journal Article

FZJ-2015-01488

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Phonons and the electronic gap in FeSi

Parshin, P. P. (Corresponding Author) ; Alekseev, P. A. ; Nemkovskiy, K.FZJ* ; Persson, J.FZJ* ; Chumakov, A. I. ; Rüffer, R.

2014
Springer Heidelberg [u.a.]

This record in other databases:  

Please use a persistent id in citations: doi:10.1134/S1063776114020034

Abstract: 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.

Keyword(s): Basic research (1st) ; Key Technologies (1st) ; Others (1st) ; Condensed Matter Physics (2nd)

---

Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. Streumethoden (PGI-4)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 54G - JCNS (POF2-54G24) (POF2-54G24)

Experiment(s):

1. External Measurement

Appears in the scientific report 2014

---

Database coverage:
Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---