RUS  ENG
Full version
JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2013 Volume 98, Issue 9, Pages 626–630 (Mi jetpl3565)

This article is cited in 23 papers

CONDENSED MATTER

Dynamics of the BiTeI lattice at high pressures

Yu. S. Ponosova, T. V. Kuznetsovaa, O. E. Tereshchenkobcd, K. A. Kokhdbe, E. V. Chulkovbfg

a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
b Tomsk State University
c Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
d Novosibirsk State University
e Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
f Donostia International Physics Center
g Departamento de Física de Materiales, Facultad de Quimica, UPV/EHU, San Sebastian, Basque Country

Abstract: Raman measurements of the phonon spectrum of BiTeI at pressures of up to $20$ GPa have been performed. A decrease in the linewidth of E$^2$ vibration by almost a factor of 2 with an increase in the pressure to $3$ GPa has been detected. The frequencies of all four Raman active modes increase monotonically with the pressure. These lines are observed in spectra up to $\sim$8 GPa. Sharp change in the spectrum occurs at pressures of $8$$9$ GPa, indicating a transition to the high-pressure phase, which holds up to $20$ GPa. This transition is reversible and hardly has any hysteresis. A sample in the high-pressure phase is single crystal.

Received: 19.08.2013
Revised: 07.10.2013

DOI: 10.7868/S0370274X1321008X


 English version:
Journal of Experimental and Theoretical Physics Letters, 2013, 98:9, 557–561

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2024