Oxygen diffusion in cuprate superconductors
نویسندگان
چکیده
منابع مشابه
Unified picture of the oxygen isotope effect in cuprate superconductors.
High-temperature superconductivity in cuprates was discovered almost exactly 20 years ago, but a satisfactory theoretical explanation for this phenomenon is still lacking. The isotope effect has played an important role in establishing electron-phonon interaction as the dominant interaction in conventional superconductors. Here we present a unified picture of the oxygen isotope effect in cuprat...
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Recent experiments on Bi-based cuprate superconductors have revealed an unexpected enhancement of the pairing correlations near the interstitial oxygen dopant ions. Here we propose a possible mechanism--based on local screening effects--by which the oxygen dopants do modify the electronic parameters within the CuO2 planes and strongly increase the superexchange coupling J. This enhances the spi...
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In this lecture we present some interesting issues that arise when the dynamics of the charge carriers in the CuO2 planes of the high temperature superconductors is considered. Based on the qualitative picture of doping, set by experiments and some previous calculations, we consider the strength of various inter and intra-cell charge transfer susceptibilities, the question of Coulomb screening ...
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In 1986, superconductivity—the ability to transport electrical current without significant resistance—was discovered in cuprate compounds. These materials have fascinated physicists ever since, in part because of the high critical temperatures (Tc’s) below which superconductivity is present and the consequent promise of technological applications. However, cuprate superconductivity also raises ...
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Pairing symmetry in the cuprate superconductors is an important and controversial topic. The recent development of phase-sensitive tests, combined with the refinement of several other symmetry-sensitive techniques, has for the most part settled this controversy in favor of predominantly d-wave symmetry for a number of optimally holeand electron-doped cuprates. This paper begins by reviewing the...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 1994
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.357067