Peculiarities of FeSi phonon spectrum induced by a change of atomic volume
作者： P. P. Parshin , A. I. Chumakov , P. A. Alekseev , K. S. Nemkovski , L. Dubrovinskii
DOI: 10.1134/S1063776116110170
关键词: Van der Waals radius 、 Solid-state physics 、 Debye 、 Atom 、 Inelastic scattering 、 Synchrotron radiation 、 Condensed matter physics 、 Materials science 、 Atomic physics 、 Electron 、 Phonon
摘要: We analyze in detail the results of experimental investigations evolution thermal vibration spectra for iron atoms monosilicide FeSi depending on two external parameters, viz., temperature T (in range 46–297 K at pressure P = 0.1 MPa) and MPa–43 GPa 297 K), obtained by nuclear inelastic scattering synchrotron radiation. The decrease atomic volume is accompanied a rearrangement phonon spectrum, which manifested, particular, splitting low-energy peak spectrum an increase energy all phonons. changes average atom vibrational Debye with decreasing are analyzed. Different versions electron variation, can be used to explain observed anomalies, considered.
springer.com
harvard.edu
uni-bayreuth.de参考文章(39)
V.G. Kohn, A.I. Chumakov, DOS: Evaluation of phonon density of states from nuclear resonant inelastic absorption Hyperfine Interactions. ,vol. 125, pp. 205- 221 ,(2000) , 10.1023/A:1012689705503
David Pines, Elementary excitations in solids ,(1964)
D. Menzel, P. Popovich, N. N. Kovaleva, J. Schoenes, K. Doll, A. V. Boris, Electron-phonon interaction and spectral weight transfer inFe1−xCoxSi Physical Review B. ,vol. 79, pp. 165111- ,(2009) , 10.1103/PHYSREVB.79.165111
R E Simon, I Sergueev, I Kantor, A Kantor, J Perßon, R P Hermann, 121Sb and125Te nuclear inelastic scattering in Sb2Te3under high pressure Semiconductor Science and Technology. ,vol. 29, pp. 124001- ,(2014) , 10.1088/0268-1242/29/12/124001
V. V. Mazurenko, A. O. Shorikov, A. V. Lukoyanov, K. Kharlov, E. Gorelov, A. I. Lichtenstein, V. I. Anisimov, Metal-insulator transitions and magnetism in correlated band insulators: FeSi andFe1−xCoxSi Physical Review B. ,vol. 81, pp. 125131- ,(2010) , 10.1103/PHYSREVB.81.125131
T. Jarlborg, Importance of thermal disorder and electronic occupation for temperature dependence of optical conductivity in FeSi and MnSi Physical Review B. ,vol. 76, pp. 205105- ,(2007) , 10.1103/PHYSREVB.76.205105
Matthew Whitaker, Wei Liu, Qiong Liu, Liping Wang, Baosheng Li, Combined in situ synchrotron X-ray diffraction and ultrasonic interferometry study of ϵ-FeSi at high pressure High Pressure Research. ,vol. 28, pp. 385- 395 ,(2008) , 10.1080/08957950802246480
J. Acker, K. Bohmhammel, G.J.K. van den Berg, J.C. van Miltenburg, Ch. Kloc, Thermodynamic properties of iron silicides FeSi andα-FeSi2 The Journal of Chemical Thermodynamics. ,vol. 31, pp. 1523- 1536 ,(1999) , 10.1006/JCHT.1999.0550
Rudolf Rüffer, Aleksandr I. Chumakov, Nuclear Resonance Beamline at ESRF Hyperfine Interactions. ,vol. 97, pp. 589- 604 ,(1996) , 10.1007/BF02150199
O. Delaire, K. Marty, M. B. Stone, P. R. C. Kent, M. S. Lucas, D. L. Abernathy, D. Mandrus, B. C. Sales, Phonon softening and metallization of a narrow-gap semiconductor by thermal disorder Proceedings of the National Academy of Sciences of the United States of America. ,vol. 108, pp. 4725- 4730 ,(2011) , 10.1073/PNAS.1014869108