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Birefringence of SnSe single crystals in excitonic and electronic transitions region
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| dc.contributor.author | ZALAMAI, V. V. | |
| dc.contributor.author | TIRON, A. V. | |
| dc.contributor.author | RUSU, E. V. | |
| dc.contributor.author | SYRBU, N. N. | |
| dc.date.accessioned | 2020-12-23T10:31:08Z | |
| dc.date.available | 2020-12-23T10:31:08Z | |
| dc.date.issued | 2019 | |
| dc.identifier.citation | ZALAMAI, V. V., TIRON, A. V., RUSU, E. V. et al. Birefringence of SnSe single crystals in excitonic and electronic transitions region. In: Materials Research Express, 2019, V. 6, Nr. 12, pp. 125909. ISSN 2053-1591. | en_US |
| dc.identifier.uri | https://doi.org/10.1088/2053-1591/ab5f8a | |
| dc.identifier.uri | http://repository.utm.md/handle/5014/12284 | |
| dc.description | Access full text - https://doi.org/10.1088/2053-1591/ab5f8a | en_US |
| dc.description.abstract | Absorption spectra in temperature range 300–10 K were studied. The minimal band gap A1 (1.091 eV at 300 K) is formed by direct allowed in E∣∣c polarization and forbidden in E∣∣a polarizations transitions. The next interval B1 (1.316 eV) is formed by direct transitions allowed in E∣∣a polarization and forbidden in E∣∣c polarization. Angular dependences of the electron transitions in the band gap minimum were investigated. Spectral dependences of refractive index (n) were calculated from wavelength modulation transmission (ΔT/Δλ) and reflection (ΔR/Δλ) spectra in the region of direct electron transitions. The absorption edge shifts to higher energies with temperature decreasing, and temperature coefficient of edge absorption shift (β) is 3.4 × 10−3 eV K−1. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | IOP Publishing | en_US |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
| dc.subject | absorption spectra | en_US |
| dc.subject | spectra | en_US |
| dc.subject | polarizations transitions | en_US |
| dc.subject | electron transitions | en_US |
| dc.title | Birefringence of SnSe single crystals in excitonic and electronic transitions region | en_US |
| dc.type | Article | en_US |
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