Electronic states and excitation spectra of A(14-x)Ca(x)Cu(24)O(41) (A=Sr,La)

被引：6
|
作者：
Mizuno, Y
Tohyama, T
Maekawa, S
机构：
[1] MIE UNIV,FAC EDUC,DEPT PHYS,TSU,MIE 514,JAPAN
[2] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 98077,JAPAN
来源：
PHYSICA C | 1997年 / 282卷
基金：
日本学术振兴会;
关键词：
D O I：
10.1016/S0921-4534(97)00628-X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We examine the electronic states of A(14-x)Ca(x)Cu(24)O(41)(A=Sr,La) by the ionic and cluster model approach. Through the analysis of Madelung energy calculation, it is found that self-doped holes for A=Sr are likely to stay on the chain at a: = O and the Ca substitution drives the holes to move to the ladder. The optical conductivity is calculated applying the exact diagonalization method to small cluster. The calculated results provide consistent explanation to recent experiment.
引用
收藏
页码：991 / 992
页数：2
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