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Semiconductors
Peculiarities of terahertz spectra of layered TlInS$_{2}$ crystals
R. M. Sardarlya, A. Z. Badalovb, A. P. Abdullayeva, T. N. Vezirovab, F. Garetcd, J.-L. Coutazcd, A. A. Oruzhovab a Institute of radiation problems, ANAS, Baku,Azerbaijan
b National Academy of Aviation, Baku
c Centre National de la Recherche Scientifique, Paris, France
d Universite de Savoie, France
Abstract:
Vibrational spectra of TlInS$_{2}$ crystals in the terahertz frequency range (0.1–3 THz) have been obtained and analyzed. The observed low-frequency band is attributed to the libration oscillations of nanolayers (so-called boson peak). A correlation between the coherent low-frequency oscillation and a disordered character of the crystal structure is shown. A conclusion is made on the presence of a topological disorder that manifests itself on the layered subsystem level.
Keywords:
Boson Peak, Acoustic Branch, Terahertz Frequency Range, Topological Disorder, Terahertz Spectrum.
Received: 20.10.2014 Revised: 10.06.2015
Citation:
R. M. Sardarly, A. Z. Badalov, A. P. Abdullayev, T. N. Vezirova, F. Garet, J.-L. Coutaz, A. A. Oruzhova, “Peculiarities of terahertz spectra of layered TlInS$_{2}$ crystals”, Fizika Tverdogo Tela, 58:1 (2016), 27–31; Phys. Solid State, 58:1 (2016), 25–29
Linking options:
https://www.mathnet.ru/eng/ftt10102 https://www.mathnet.ru/eng/ftt/v58/i1/p27
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Abstract page: | 18 | Full-text PDF : | 11 |
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