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A "soft electronic band" and the negative thermooptic effect in strontium titanate
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SYSNO ASEP 0330068 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A "soft electronic band" and the negative thermooptic effect in strontium titanate Title "Měkký elektronový pás" a záporný termooptický efekt v SrTiO3 . Author(s) Trepakov, Vladimír (FZU-D) RID
Dejneka, Alexandr (FZU-D) RID, ORCID
Markovin, P. (RU)
Lynnyková, Anna (FZU-D) RID
Jastrabík, Lubomír (FZU-D) RID, ORCIDSource Title New Journal of Physics. - : Institute of Physics Publishing - ISSN 1367-2630
Roč. 11, č. 8 (2009), 083024/1-083024/9Number of pages 9 s. Language eng - English Country DE - Germany Keywords SrTiO3 ; optical properties ; spectroscopic ellipsometry ; negative thermooptic effect Subject RIV BH - Optics, Masers, Lasers R&D Projects GA202/08/1009 GA ČR - Czech Science Foundation (CSF) KJB100100703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KAN301370701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100522 - FZU-D (2005-2011) UT WOS 000269487500001 DOI 10.1088/1367-2630/11/8/083024 Annotation The optical properties of strontium titanate (SrTiO3) single crystals were determined with spectroscopic ellipsometry in the 1–6 eV spectral region and the 4.2–300 K temperature region.New results regarding features of band edge and near band edge indirect and direct fundamental optical transitions were obtained and updated.It was shown that whereas the indirect transitions lowest in energy shift to higher energies on cooling, the energy of the stronger direct optical transitions in the region of 3.7–4.0 eV shifts to the opposite side, to lower energies , and these transitions can be treated as the "soft electronic band". Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
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