The boson peak in Raman spectra of AsxS1−x glasses
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The Raman spectra of AsxS1−x glasses with x < 40 at % (Z < 2.4) have been studied in a wide temperature range (20–300 K). A well resolved boson peak is observed in the low-frequency portion of the spectrum, not withstanding the appearance of floppy modes in the glasses under study. It is shown that the boson peak is characterized by two parameters: intensity and the peak position. A comparison of the intensity variation for the boson peaks indicates that the degree of disorder increases as x decreases. This effect is caused by floppy modes in the glass network and by sulfur phase separation. Studies of reduced boson peaks in the Raman spectra of AsxS1−x glasses confirms the theoretical assumption that the shape of the peaks is independent of composition and temperature.
- R. Shuker and R. Gammon, Phys. Rev. Lett. 25, 222 (1970). CrossRef
- A. J. Martin and W. Brening, Phys. Status Solidi B 64, 163 (1974).
- N. Mateleshko, M. Veres, V. Mitsa, et al., Phys. Chem. Solid State 1, 241 (2000).
- E. Vateva and E. Skordeva, J. Optoelectron. Adv. Mater. 4, 3 (2004).
- Y. C. Boulmetis, A. Perakis, C. Raptis, et al., J. Non-Cryst. Solids 347, 187 (2004). CrossRef
- The boson peak in Raman spectra of AsxS1−x glasses
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