Superconducting properties of MgB2 with different lattice parameters

被引：0
|
作者：
Chen, L [1 ]
Li, H
机构：
[1] Shandong Univ, Sch Phys & Microelect, Jinan 250100, Peoples R China
[2] Linyi Teachers Univ, Dept Phys, Linyi 276005, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2003年 / 20卷 / 07期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the electronic structures and superconductivities of new superconductor MgB2 with different lattice parameters by means of multiple-scattered-Xalpha calculation. It is shown that the lattice parameters have great effect on the superconductivity of MgB2. The results of this paper show that the density of states at the Fermi level decreases with the decreasing lattice parameters. The effects are very more sensitive substantially to the change of the lattice parameter a as compared with that of the lattice parameter c. Correspondingly, the superconducting transition temperature T-C decreases correspondingly mainly with decreasing the lattice parameter a. Our results are in good agreement with the experiments.
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页码：1128 / 1130
页数：3
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