Enhanced superconductivity in Sr2CuO4-v

被引：49
作者：
Geballe, T. H. [2 ]
Marezio, M. [1 ]
机构：
[1] CNRS, CRETA, F-38042 Grenoble 9, France
[2] Stanford Univ, Dept Appl Phys & Mat Sci, Stanford, CA 94305 USA
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 13期
关键词：
High T-c superconductivity; Highly overdoped cuprate; INCOMMENSURATE MODULATED STRUCTURE; HIGH-PRESSURE; SR2CUO3+DELTA; TEM; CUPRATE;
D O I：
10.1016/j.physc.2009.03.054
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A critical review of previous investigations of the superconductivity with enhanced T-c similar to 95 K found in Sr2CuO4-v shows that new physics occurs in a highly overdoped region of the cuprate phase diagram. Moreover, evidence is adduced from the literature that 30% of the oxygen sites in the CuO2 layers are vacant; a conclusion which is at odds with the universally made assumption that superconductivity originates in stoichiometric CuO2 layers. While further research is needed in order to identify the pairing mechanism(s) responsible for the enhanced T-c, we suggest possible candidates. (c) 2009 Published by Elsevier B.V.
引用
收藏
页码：680 / 684
页数：5
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