Role of anisotropy and spin-orbit interaction in the optical and dielectric properties of BiTeI and BiTeCl compounds

The dielectric and optical properties of semiconductor compounds BiTeI and BiTeCl have been studied theoretically within time dependent density functional theory and experimentally by spectral ellipsometry. Anisotropy of dielectric constants in the long-wavelength limit and dispersion of the σ and σ...

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Published inJETP letters Vol. 101; no. 8; pp. 507 - 512
Main Authors Rusinov, I. P., Tereshchenko, O. E., Kokh, K. A., Shakhmametova, A. R., Azarov, I. A., Chulkov, E. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2015
Subjects
Atomic
Biological and Medical Physics
Biophysics
Molecular
Optical and Plasma Physics
Optics and Laser Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
Dielectric Constant
JETP Letter
Orbit Interaction
Dielectric Property
Dielectric Function
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Summary:The dielectric and optical properties of semiconductor compounds BiTeI and BiTeCl have been studied theoretically within time dependent density functional theory and experimentally by spectral ellipsometry. Anisotropy of dielectric constants in the long-wavelength limit and dispersion of the σ and σ + π bulk plasmons in the longitudinal and transverse directions of the crystals have been discovered. It has been shown that the inclusion of the spin-orbit interaction is necessary for agreement between the theory and the results of optical measurements.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364015080147