Experimental and theoretical study of Raman scattering spectra of ternary chalcogenides Tl4HgI6, Tl4HgBr6, and TlHgCl3

被引：6
|
作者：
Yukhymchuk, Volodymyr O. [1 ]
Dzhagan, Volodymyr M. [1 ]
Mazur, Nazar V. [1 ]
Parasyuk, Oleg V. [2 ]
Khyzhun, Oleg Y. [3 ]
Luzhnyi, Ivan V. [3 ]
Yaremko, Anatoliy M. [1 ]
Valakh, Mykhailo Ya. [1 ]
Litvinchuk, Alexander P. [4 ,5 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Semicond Phys, Pr Nauky 45, UA-03028 Kiev, Ukraine
[2] Lesya Ukrainka Eastern European Natl Univ, Dept Inorgan & Phys Chem, Lutsk, Ukraine
[3] Natl Acad Sci Ukraine, Frantsevych Inst Problems Mat Sci, Kiev, Ukraine
[4] Univ Houston, Texas Ctr Superconduct, Houston, TX USA
[5] Univ Houston, Dept Phys, Houston, TX USA
来源：
JOURNAL OF RAMAN SPECTROSCOPY | 2018年 / 49卷 / 11期
关键词：
lattice dynamics; normal modes; Tl4HgBr6; Tl4HgI6; TlHgCl3; SINGLE-CRYSTALS; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; GROWTH; ANISOTROPY; TL3PBBR5;
D O I：
10.1002/jrs.5468
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The results of a comprehensive experimental and theoretical study of Raman scattering of Tl4HgI6, Tl4HgBr6, and TlHgCl3 ternary chalcogenides are presented. Phonon mode assignment to the specific lattice eigenmodes is achieved via comparison of experimental data with the results of first principle lattice dynamics calculations. Both experimental data and theoretical calculations allow to confirm that Tl4HgBr6 crystals belong to the non-centrosymmetric space group P4nc, whereas Tl4HgI6 to the centrosymmetric space group P4/mnc.
引用
收藏
页码：1840 / 1848
页数：9
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