copper oxide superconductorsThe temperature dependence of the Raman spectrum of copper oxide superconductors is calculated assuming that the normal state of these systems is a correlated metal and that the superconductivity arises due to the correlation bag mechanism proposed earlier (Debanand Sa, S.N...
The effect of the charge fluctuations on the electronic spectrum and the Raman spectrum of high temperature superconductors is examined within the slave boson approach. Instead of using the saddle point approximation for slave bosons, we confine ourselves to the non-crossing approximation (NCA) in ...
Evolution of the Raman spectrum of graphene grown on copper upon oxidation of the substrate. Nano Res. 1-10 (2014) doi:10.1007/ s12274-014-0521-0.X. Yin, Y. Li, F. Ke, C. Lin, H. Zhao, L. Gan, et al., Evolution of the Raman spectrum of graphene grown on copper upon ...
The bands in a spectrum correspond to specific vibrational states within the sample, and they enable the material to be identified. Compounds with similar chemical or crystal structures can easily be differentiated using Raman spectroscopy. For example, iron oxide pigments containing Fe2O3and Fe3O4...
The influence of copper oxide (CuO) content on the structure of 3B 2O 3·SrO glass was investigated by means of Raman spectroscopy. For the sample without CuO, the Raman spectrum indicates a structure with majority pentaborate groups. At high wavenumbers, there is a broad and intense band pr...
Probing intermediate configurations of oxygen evolution catalysis across the light spectrum Article26 August 2024 Introduction Electrosynthesis, including the electrochemical CO2and CO reduction reactions, referred to as the CO2RR and the CORR, respectively, has been recognized as a key component in the ...
A subset of the possible molecular vibrations gives rise to strong Raman scattering and thus a peak in the Raman spectrum. The basic selection rule for Raman scattering is that it results from vibrations that change the polarisability of the molec...
in steps of 0.1 µm and at each position a Si-Raman spectrum, such as the one shown in Figure 3, is recorded. A Lorentzian function is fitted to each of these Raman peaks in order to determine the frequency. The shift of this frequency from the stress free value, Δω, is plotted...
Sometimes they also sporadically deliver a weaker laser-like beam at 650 nm that can cause a huge line in the Raman spectrum at 418 cm−1. The 650 nm radiation is due to an intracavity pumped laser Raman transition. Diode lasers in the near-infrared, red, and, more recently, violet ...
As a first step, the tip was completely retraced until reaching a distance of about 50 micrometers between the AFM tip and the sample to be measured. Afterwards, a Raman spectrum was recorded, which shows the typical D- and G-peak for carbon nanoparticles. This spectrum (blue color) can...