Optical absorption studies of pyrite-type RuS2 RuSe2 and RuTe2 single crystals

Tzuen-Rong Yang, Ying Sheng Huang, Y. K. Chyan, J. D. Chang

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Abstract

Far-Inflated optical characterization of pyrite - type RuS2 RuSe2 and RuTe2 have been studied by absorption measurements. We measured these three types of pyrite single crystals in spectra ranging from 100 - 700 cm-1 at temperature among 80 - 300 K. Those vibration modes of these crystals are clearly shown temperature dependent behavior in far-infrared range. The main peaks ofphonon modes of RuSz are near around 244 · 341 · 366 · 401 and 416 cm-1 at 80 K that is shown in its reflectance spectra. There are three main phonon peaks clearly showed 207 · 257 and 297 cm-1 for RuSe2 single crystal. However RuTe2 crystal has only clearly shown a main phonon peak near around 247 cm-1 at 80 K in the reflectance spectra for its highly metallic behavior. This metallic behavior of RuTe2 is also shown in photo reflectance measurements. All of these phonon modes have 2 - 4 cm-1 shift in among 80 - 300 K. The phonon modes, carrier concentration, mobility, effective mass as well as their dielectric behavior of these pyrite-type crystals will go further study.

Original languageEnglish
Pages (from-to)2541-2542
Number of pages2
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 5
DOIs
Publication statusPublished - 1996 Dec 1

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pyrites
optical absorption
single crystals
reflectance
crystals
vibration mode
temperature
shift

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  • Physics and Astronomy(all)

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Optical absorption studies of pyrite-type RuS2 RuSe2 and RuTe2 single crystals. / Yang, Tzuen-Rong; Huang, Ying Sheng; Chyan, Y. K.; Chang, J. D.

In: Czechoslovak Journal of Physics, Vol. 46, No. SUPPL. 5, 01.12.1996, p. 2541-2542.

Research output: Contribution to journalArticle

Yang, Tzuen-Rong ; Huang, Ying Sheng ; Chyan, Y. K. ; Chang, J. D. / Optical absorption studies of pyrite-type RuS2 RuSe2 and RuTe2 single crystals. In: Czechoslovak Journal of Physics. 1996 ; Vol. 46, No. SUPPL. 5. pp. 2541-2542.
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