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Showing 1 to 7 of 7 for “"Kramers Kronig Analysis"”.
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Novel characterization of materials using THz spectroscopic techniques
… are deduced directly without resorting to the Kramers-Kronig Analysis. In this work, THz spectroscopy has been used to characterize different types of materials. Materials investigated consisted of semiconductors, gate dielectric materials, high energetic materials and cyclic olefin polymers. …
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Optical investigation of bismuth selenide (Bi2Se3) and antimony telluride (Sb2Te3).
… cm−1 ) and temperature (13 to 300 K) . Utilizing Kramers-Kronig analysis, complex conductivity is calculated from which other optical properties are obtained. The resistivity of both samples demonstrates metallic behavior with residual resistivity ratios of 1.8 for Bi2Se3 and 7.5 for Sb2Te3, …
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Low-dimensional purple and blue bronzes: Crystal growth, characterization and optical properties
… plane. The optical conductivity obtained from Kramers-Kronig analysis of reflectance spectroscopy data was in good agreement with the resistivity measurements. The two in-plane metallic axes undergo CDW transitions at two different temperatures Tp, suggesting a distinction in electronic and …
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Investigation of the optical properties of Bi₂Sr₂Ca<sub>n-1</sub>Cu<sub>n</sub>O<sub>y</sub> (n=1,2) by transmission electron energy loss spectroscopy
… functions of these materials were derived by Kramers-Kronig analysis. A broad excitation centered at 2.7eV was identified as associated with the Cu — O₂ layer by comparing the spectrum of Bi₂Sr₂CaCu₂O₈ with that of Bi₂Sr₂CuO₆. A pseudo gap of 1.2eV in the spectrum of Bi₂Sr₂CuO₆ suggests that …
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Far infrared reflectance and optical properties of organic superconductor (TMTSF)2ClO4 /
… of the expected superconducting energy gap. Kramers-Kronig analysis was carried out to determine the optical conductivity for the slowly cooled sample from the measured reflectance. In order to do so the low frequency data was extrapolated to zero frequency using a Hagen-Ru bens behaviour, …
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Grenzflächen-Analyse durch Mie-Plasmon-Spektroskopie an Edelmetallclustern
… to bulk silver were discovered by means of a Kramers-Kronig-Analysis. Electron-spill-out into the surrounding matrix, static charge transfer through chemical cluster-matrix-bonding and/or changed interband-transitions caused a shift between calculated and measured Mie-resonance maximum. The …
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Discovery of a Pseudogap Attributed to Charge Density Wave Order at the β-β′ Phase Transition in As2Te3 and the Influence of Cu and Ge Doping on its Properties
In this work, the origin and driving mechanism of the β to β' phase transition of As2Te3 is investigated through primarily resistivity, optical reflectance and heat capacity measurements. From optical reflectivity we identify the formation of a pseudogap concomitant to the β-As2Te3 to β'-As2Te3 …