Magnetic-Field-Tunable Intensity Transfer from Optically Active Phonons to Crystal-Field Excitations in the Reflection Spectra of the PrFe3(BO3)4 Antiferromagnet

被引：0
|
作者：
Boldyrev, Kirill N. [1 ]
Malkin, Boris Z. [2 ]
Popova, Marina N. [1 ]
机构：
[1] Russian Acad Sci, Inst Spect, Moscow 108840, Russia
[2] Kazan Fed Univ, Inst Phys, Kazan 420008, Russia
来源：
CRYSTALS | 2022年 / 12卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
intensities of coupled electron-phonon modes; PrFe3(BO3)(4); theory of intensity transfer; MAGNETOELECTRIC PROPERTIES; EARTH; ION;
D O I：
10.3390/cryst12030392
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
We analyze the field-dependent intensities of the coupled electron-phonon modes observed in the low-temperature far-infrared (terahertz) reflection spectra of PrFe3(BO3)(4) and develop a theory based on the Green's function approach. An excellent agreement between the experimental and theoretical data is achieved. The developed theory of the intensity transfer from phonons to quasi-electronic excitations can be applied to the electron-phonon modes in other compounds, in particular, in magnetodielectric materials, where it can be used to analyze the magnetodielectric response.
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页数：8
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