Electronic Properties of Magnetic Semiconductor Compounds TlFeS2 and TlFeSе2

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Z. A. Jahangirli, R. G. Veliyev, Z. I. Badalova, R. G. Seyidov, E. H. Alizade, T. G. Mammadov, N. A. Abdullayev
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引用次数: 0

Abstract

The electronic properties of magnetic semiconductors TlFeS2 and TlFeSе2 have been investigated experimentally by spectral ellipsometry and theoretically ab initio using the density functional theory (DFT). The imaginary and real parts of the dielectric function and the dispersion of the refractive indices, extinction coefficients, and absorption coefficients are found from ellipsometric measurements in the energy range of 0.7−6.5 eV. The direct band gap is estimated. The band structure, the origin of energy states, the optical functions, and the partial densities of states (PDOS) projected on atoms are determined from ab initio calculations. The calculation results are compared with the spectral ellipsometry data obtained in this study.

Abstract Image

磁性半导体化合物TlFeS2和tlfesandre2的电子性质
采用椭圆偏振光谱法和密度泛函理论从头计算方法研究了磁性半导体TlFeS2和tlfesnovel2的电子特性。在0.7 ~ 6.5 eV的能量范围内,通过椭偏测量得到了介电函数的虚部和实部以及折射率、消光系数和吸收系数的色散。估计了直接带隙。通过从头计算确定了带结构、能态起源、光学函数和投射到原子上的部分态密度(PDOS)。计算结果与本研究获得的光谱椭偏数据进行了比较。
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来源期刊
Physics of Wave Phenomena
Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.50
自引率
21.40%
发文量
43
审稿时长
>12 weeks
期刊介绍: Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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