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@ARTICLE{Parshin:827463,
author = {Parshin, P. P. and Chumakov, A. I. and Alekseev, P. A. and
Nemkovskiy, Kirill and Dubrovinskii, L. and Kantor, A. and
Persson, Jörg and Rüffer, R.},
title = {{P}eculiarities of {F}e{S}i phonon spectrum induced by a
change of atomic volume},
journal = {Journal of experimental and theoretical physics},
volume = {123},
number = {6},
issn = {1090-6509},
address = {Heidelberg [u.a.]},
publisher = {Springer},
reportid = {FZJ-2017-01588},
pages = {1073 - 1083},
year = {2016},
abstract = {We analyze in detail the results of experimental
investigations of the evolution of the thermal vibration
spectra for iron atoms in iron monosilicide FeSi depending
on two external parameters, viz., temperature T (in the
range 46–297 K at pressure P = 0.1 MPa) and pressure P (in
the range 0.1 MPa–43 GPa at temperature T = 297 K),
obtained by nuclear inelastic scattering of synchrotron
radiation. The decrease of the atomic volume is accompanied
by a rearrangement of the phonon spectrum, which is
manifested, in particular, in the splitting of the
low-energy peak in the spectrum and in an increase of the
energy for all phonons. The changes of the average energy of
the iron atom vibrational spectrum and of the Debye energy
with decreasing atomic volume are analyzed. Different
versions of FeSi electron spectrum variation, which can be
used to explain the observed phonon anomalies, are
considered.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106},
pnm = {524 - Controlling Collective States (POF3-524) / 6212 -
Quantum Condensed Matter: Magnetism, Superconductivity
(POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich
Centre for Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212 /
G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000392931300018},
doi = {10.1134/S1063776116110170},
url = {https://juser.fz-juelich.de/record/827463},
}