Optical properties of Nb-doped SrTiO3 single crystal
Far-infrared reflectivity spectra of (100) SrTi1−xNbxO3 single crystal have been measured under different temperatures in the frequency region between 100 and 6000cm−1. The obtained spectra are analyzed based on the double damping extended Drude model. Extra absorption near the highest frequency lon...
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| Veröffentlicht in: | Physica. C, Superconductivity Superconductivity, 2007-10, Vol.463-465, p.107-110 |
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| container_title | Physica. C, Superconductivity |
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| creator | Ma, J.Y. Bi, C.Z. Fang, X. Zhao, H.Y. Kamran, M. Qiu, X.G. |
| description | Far-infrared reflectivity spectra of (100) SrTi1−xNbxO3 single crystal have been measured under different temperatures in the frequency region between 100 and 6000cm−1. The obtained spectra are analyzed based on the double damping extended Drude model. Extra absorption near the highest frequency longitudinal phonon mode shows that the polaron coupling must be taken into account. The splitting of the last high reflectivity band, the temperature dependence of the 615cm−1 structure and the appearance of a new weak peak-like defect mode provide some evidence for the existence of small polarons. |
| doi_str_mv | 10.1016/j.physc.2007.05.014 |
| format | Article |
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The obtained spectra are analyzed based on the double damping extended Drude model. Extra absorption near the highest frequency longitudinal phonon mode shows that the polaron coupling must be taken into account. The splitting of the last high reflectivity band, the temperature dependence of the 615cm−1 structure and the appearance of a new weak peak-like defect mode provide some evidence for the existence of small polarons.</description><identifier>ISSN: 0921-4534</identifier><identifier>EISSN: 1873-2143</identifier><identifier>DOI: 10.1016/j.physc.2007.05.014</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Insulators ; Optical properties ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optical properties of specific thin films ; Phonon ; Physics ; SrTiO3</subject><ispartof>Physica. 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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Insulators Optical properties Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Phonon Physics SrTiO3 |
| title | Optical properties of Nb-doped SrTiO3 single crystal |
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