书目名称 | Phase Separation in Cuprate Superconductors |
副标题 | Proceedings of the s |
编辑 | Ernst Sigmund,K. Alex Müller |
视频video | |
图书封面 |  |
描述 | Phase separation has become a fascinating subject in the discussion of cuprate superconductors. All these materials have layered structures containing CU02 planes as the most important building blocks. They are coupled only weakly so that the electronic properties show a nearly two-dimensional behaviour. Due to correlations the undoped compounds are insulators of the Mott Hubbard type exhibiting long-range antiferromagnetic order. Upon doping a rich scenario of physical phenomena appears: Even at low hole concentra tions the antiferromagnetic ordering temperature is reduced drastically and spin-glass behaviour as well as a hopping type conductivity can be observed. Further doping leads to metallic-like conductivity and below Tc to super conductivity. In this doping regime antiferromagnetic fluctuations are still observed. At very high charge carrier densities superconductivity is lost and the systems show pure metallic conduction without ,magnetic correlations. One of the most interesting phenomena in high-T c research is the interplay between magnetism and conductivity or superconductivity. Especially the behaviour of charge carriers in the antiferromagnetic background raises a |
出版日期 | Conference proceedings 1994 |
关键词 | Cuprate Superconductors; Mössbauer spectroscopy; Superconductor; band structure; crystal; diffusion; elect |
版次 | 1 |
doi | https://doi.org/10.1007/978-3-642-78805-5 |
isbn_softcover | 978-3-642-78807-9 |
isbn_ebook | 978-3-642-78805-5 |
copyright | Springer-Verlag Berlin Heidelberg 1994 |