نتایج جستجو برای: prba2cu3o7
تعداد نتایج: 36 فیلتر نتایج به سال:
Based on the density functional theory and using the full-potential linearized augmented-plane-waves method the electronic structure of PrBa2Cu3O7 (Pr123) system was calculated. The rotationally invariant local spin density approximation plus Hubbard parameter U was employed for Pr(4f) orbitals. One self-consistent solution more stable than the previous solution, which has been proposed by Lie...
PrBa2Cu3O7 (PBCO) is unique in the RBa2Cu3O7 (R=rare earth) series because it is not superconducting. In fact, for Y1−xPrxBa2Cu3O7, Tc drops monotonically with Pr concentration, with Tc going to zero at ∼55% Pr. There have been many studies of this material with the hope that an explanation for the lack of superconductivity in PBCO might help explain why YBa2Cu3O7 (YBCO) is superconducting. Exp...
Two-magnon Raman scattering provides important information about electronic correlations in the insulating parent compounds of high-Tc materials. Recent experiments have shown a strong dependence of the Raman signal in B1g geometry on the frequency of the incoming photon. We present an analytical and numerical study of the Raman intensity in the resonant regime. It has been previously argued by...
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