%0 Journal Article
%T EFFECT OF Sc-Cu SUBSTITUTION ON THE ELECTRONIC STRUCTURE OF Y-Ba-Cu-O(123) SYSTEMS<br>Sc替代Y-Ba-Cu-O(123)系统的Cu位对该系统电子结构的影响
%A WANG HUAI-YU
%A ZHANG LI-YUAN
%A LIU FU-SUI
%A WANG EN-GE
%A <br>王怀玉
%A 章立源
%A 刘福绥
%A 王恩哥
%J 物理学报
%D 1991
%I 
%X The electronic structures of high Tc superconductors YBa2Cu2ScO7, including two cases of Sc substituting Cul and Cu2 sites, are studied. Sc-Cu2 replacement has effects on electronic structure of Cu-O layers, which may possibly destroy the high temperature superconductivity. However, our calculations show that it is more likely for Sc to substitute Cul site. It is shown that the overlapping splitting between the major bonding partial wave of Sc and its remaining four 3d orbitals is as large as 4eV. Thus one can detect experimentally, by near infrared fluorescence, whether Sc substitute Y or Cu sites in Sc-Y-Ba-Cu-O materials.
%K Sc
%K Y－Ba－Cu－O
%K Cu
%K 电子结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6e709dc38fa1d09a4b578dd0906875b5b44d4d294832bb8e&cid=47ea7cfddebb28e0&jid=29df2cb55ef687e7efa80dfd4b978260&aid=433445ae96601f0201623bf83be64b3e&yid=116cb34717b0b183&vid=1371f55da51b6e64&iid=ca4fd0336c81a37a&sid=39eef47180459690&eid=74011071555eb4e5&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=6