Phonon and electron-phonon renormalization in Al-doped MgB2 -: art. no. 144508

被引：52
|
作者：
Profeta, G [1 ]
Continenza, A
Massidda, S
机构：
[1] Univ Aquila, INFM, I-67010 Coppito, Laquila, Italy
[2] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Laquila, Italy
[3] Univ Cagliari, INFM, I-09124 Cagliari, Italy
[4] Univ Cagliari, Dipartimento Fis, I-09124 Cagliari, Italy
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.68.144508
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A detailed ab initio study of the electronic properties of the Al-doped MgB2 compound is reported. The E-2g phonon frequency is calculated as a function of the Al content within linear-response theory. Our results show that a strong phonon frequency renormalization starts at 25% Al content, explaining the phonon frequency behavior as a function of Al doping reported by different experiments.
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页数：4
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