PrBa2Cu3O7−y: SUPERCONDUCTING OR ANOMALOUSLY MAGNETIC?
نویسندگان
چکیده
منابع مشابه
جوابهای خودسازگار ساختار الکترونی PrBa2Cu3O7 با LSDA+U
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...
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The (mostly) insulating behaviour of PrBa2Cu3O7−δ is still unexplained and even more interesting since the occasional appearance of superconductivity in this material. Since YBa2Cu3O7−δ is nominally iso-structural and always superconducting, we have measured the electron momentum density in these materials. We find that they differ in a striking way whereas LDA based calculations predict simila...
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In an attempt to destabilize the magnetic state of the heavy lanthanide Dy, extreme pressures were applied in an electrical resistivity measurement to 157 GPa over the temperature range 1.3–295 K. The magnetic ordering temperature To and spin-disorder resistance Rsd of Dy, as well as the superconducting pair-breaking effect Tc in Y(1 at.% Dy), are found to track each other in a highly nonmonoto...
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We present in this paper an overview of the work that has been performed on hightemperature superconductor superlattices, with a special emphasis on the superconducting properties of YBa2Cu3O7/PrBa2Cu3O7 multilayers. The critical temperature and superconductivity in ultra-thin films, the vortex dynamics, and the field-temperature vortex phase diagram in YBa2Cu3O7/PrBa2Cu3O7 multilayers are stud...
متن کاملLocal disorder in the oxygen environment around praseodymium in Y1-xPrxBa2Cu3O7 from x-ray-absorption fine structure.
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...
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تاریخ انتشار 1999