元素替代对铜氧化合物YBa_2Cu_3O_7-y超导电性的影响  

Effect of elemental substitutions on superconductivity in YBa_2Cu_3O_7-y system

作　　者：姚恺[1] 

机构地区：[1]新乡师范高等专科学校物理系,河南新乡453000

出　　处：《河南科技学院学报》2005年第1期106-110,共5页Journal of Henan Institute of Science and Technology(Natural Science Edition)

摘　　要：本文系统介绍了YBa2Cu3O7-y高温超导体中不同位置、不同元素替代对其超导电性的影响。我们认为元素替代引起的局域电子结构的变化导致体系的晶体结构、氧含量以及载流子浓度的变化是影响到超导电性改变的本质因素。In this paper, the diverse elemental substitution at different site in YBa2Cu3O7-y has been systematically introduced. It could be concluded that the local electronic structure ha been changed by elemental substitution, which altered the crystal structure, oxygen content and carrier density. It is the essential reason for elemental substitution influence superconductivity in this system.

关 键 词：铜氧化物 元素替代 超导电性 

分 类 号：O511[理学—低温物理]