wave superconductivity: Analysis of the electronic Raman data of and other cuprates
wave superconductivity: Analysis of the electronic Raman data of and other cuprates
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波超导： 和其他铜氧化物的电子拉曼数据分析
DOI：
10.1007/s100510050471
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
E. Walker
中科院分区：
文献类型：
--
作者：
R. Nemetschek;R. Hackl;M. Opel;R. Philipp;M. Béal;J. B. Bieri;K. Maki;A. Erb;E. Walker
在简要回顾了适用于某些各向异性高温超导体的+s模型后，我们提出了该模型下的电子拉曼谱理论，并与过掺杂Y_（123）单晶的新实验数据进行了比较。Thed+ s模型似乎令人满意地描述了实验结果，表明混合比可能与掺杂有关。我们注意到过掺杂Bi 2212的拉曼光谱也可以用+s超导模型来解释。对Hg 1212（或Hg 1223）的情况进行了重新研究。看来d波对称性的自发破缺在高Tc铜氧化物中可能相当普遍。
After briefly recalling thed+smodel valid for some anisotropic highTcsuperconductors, we present a theory of electronic Raman spectra in that model and then compare it with new experimental data obtained for an overdoped Y123 single crystal. Thed+smodel appears to describe satisfactorily the experimental results, indicating a possible doping dependence of the mixing ratio. We note that the Raman spectrum of the overdoped Bi2212 could also be accounted for by thed+ssuperconductivity model. The case of Hg1212 (or Hg1223) is reexamined. It appears that the spontaneous breakdown ofd-wave symmetry may be rather universal in highTccuprates.