Ab initio investigation of elastic constants of superconducting MgB2

被引：44
|
作者：
Islam, AKMA [1 ]
Islam, FN [1 ]
机构：
[1] Rajshahi Univ, Dept Phys, Rajshahi 6205, Bangladesh
来源：
PHYSICA C | 2001年 / 363卷 / 03期
关键词：
ab initio method; elastic constants; MgB2;
D O I：
10.1016/S0921-4534(01)00973-X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The five different elastic constants of the new superconducting MgB2 are calculated by ab initio method using a density functional theory Hamiltonian with both correlation and exchange potentials. The results are compared with those from a recent FPLMTO calculation. The fully relaxed and isotropic bulk moduli were also estimated and the implication of their comparison is made, e.g., MgB2 is less anisotropic than one would otherwise suppose on the basis of its 'planar' crystal structure. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：189 / 193
页数：5
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