Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband
Physical conditions for occurrence of the spectral bands with the negative dielectric permittivity in nonmagnetic crystalline media in the terahertz waveband have been studied in this work. It has been shown that damping the polar vibrations has a primary effect on formation of the negative diele...
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| Опубліковано в: : | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Дата: | 2012 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2012
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/118282 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband / S.G. Felinskyi, P.A. Korotkov, G.S. Felinskyi // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2012. — Т. 15, № 1. — С. 83-88. — Бібліогр.: 9 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-118282 |
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Felinskyi, S.G. Korotkov, P.A. Felinskyi, G.S. 2017-05-29T14:45:29Z 2017-05-29T14:45:29Z 2012 Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband / S.G. Felinskyi, P.A. Korotkov, G.S. Felinskyi // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2012. — Т. 15, № 1. — С. 83-88. — Бібліогр.: 9 назв. — англ. 1560-8034 PACS 77.22.Ch, 77.84.Ek https://nasplib.isofts.kiev.ua/handle/123456789/118282 Physical conditions for occurrence of the spectral bands with the negative dielectric permittivity in nonmagnetic crystalline media in the terahertz waveband have been studied in this work. It has been shown that damping the polar vibrations has a primary effect on formation of the negative dielectric permittivity in real crystals at resonance (terahertz) frequencies, and phonon attenuation imposes significant restrictions both on the frequency range and the minimum achievable value for all dielectric tensor components. Within frameworks of the single-oscillator model, the authors have obtained: i) the criterion for the existence of the negative dielectric permittivity, which is based on physical and spectroscopic parameters of the crystal, ii) analytical expressions for calculation of the frequency band where the dielectric permittivity takes negative values. Frequency regions and the minimum value of negative dielectric permittivity are quantitatively defined in the crystal LiTaO₃. It is proved the applicability of the obtained relationships in cases of relatively complex phonon vibration spectra. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| spellingShingle |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband Felinskyi, S.G. Korotkov, P.A. Felinskyi, G.S. |
| title_short |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| title_full |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| title_fullStr |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| title_full_unstemmed |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| title_sort |
negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband |
| author |
Felinskyi, S.G. Korotkov, P.A. Felinskyi, G.S. |
| author_facet |
Felinskyi, S.G. Korotkov, P.A. Felinskyi, G.S. |
| publishDate |
2012 |
| language |
English |
| container_title |
Semiconductor Physics Quantum Electronics & Optoelectronics |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| format |
Article |
| description |
Physical conditions for occurrence of the spectral bands with the negative
dielectric permittivity in nonmagnetic crystalline media in the terahertz waveband have
been studied in this work. It has been shown that damping the polar vibrations has a
primary effect on formation of the negative dielectric permittivity in real crystals at
resonance (terahertz) frequencies, and phonon attenuation imposes significant restrictions
both on the frequency range and the minimum achievable value for all dielectric tensor
components. Within frameworks of the single-oscillator model, the authors have
obtained: i) the criterion for the existence of the negative dielectric permittivity, which is
based on physical and spectroscopic parameters of the crystal, ii) analytical expressions
for calculation of the frequency band where the dielectric permittivity takes negative
values. Frequency regions and the minimum value of negative dielectric permittivity are
quantitatively defined in the crystal LiTaO₃. It is proved the applicability of the obtained
relationships in cases of relatively complex phonon vibration spectra.
|
| issn |
1560-8034 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/118282 |
| citation_txt |
Negative dielectric permittivity of nonmagnetic crystals in the terahertz waveband / S.G. Felinskyi, P.A. Korotkov, G.S. Felinskyi // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2012. — Т. 15, № 1. — С. 83-88. — Бібліогр.: 9 назв. — англ. |
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| first_indexed |
2025-11-30T23:06:20Z |
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2025-11-30T23:06:20Z |
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