OXYGEN ORDERING AND SUPERCONDUCTING TEMPERATURE OF YBA2CU3O6+X

被引：19
作者：
LAPINSKAS, S
ROSENGREN, A
TORNAU, EE
机构：
[1] Department of Theoretical Physics, Royal Institute of Technology
来源：
PHYSICA C | 1992年 / 199卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(92)90544-M
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An analysis of the relation between the superconducting temperature T(c) and the oxygen ordering in the basal CuOx plane of the high-temperature superconductor YBa2Cu3O6+x is presented. Superconductivity in the CuO2 planes of a non-stoichiometric compound is assumed to appear locally, just in the neighbourhood of the regions with O-Cu-O chains. Bulk superconductivity occurs when these regions form a percolation network characterized by the minimal width d of a percolation path with T(c) depending on d. The evaluation of d by the cluster field method allows one to obtain quantitative agreement of the calculated and experimental T(c)(x) dependences.
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页码：91 / 94
页数：4
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