Investigation of the atomic core structure of the ((a)over-right-arrow plus (c)over-right-arrow)-mixed dislocation in wurtzite GaN

被引:6
|
作者
Belabbas, I. [1 ]
Bere, A. [2 ]
Chen, J. [3 ]
Ruterana, P. [2 ]
Nouet, G. [2 ]
机构
[1] Ecole Natl Super Ingn Caen, CNRS, UMR 6176, Lab Struct Interfaces & Fonctionnalite Couches Mi, 6 Blvd Marechal Juin, F-14050 Caen, France
[2] Univ Ouagadougou, Lab Phys & Chem Environm, Ouagadougou 7021, Burkina Faso
[3] Inst Univ Technol, Lab Res Properties New Mat, Damigny 61250, France
关键词
D O I
10.1002/pssc.200675441
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
By using a tight-binding based ab-initio method, we have investigated the atomic and electronic core structures of the threading ((a) over right arrow + (c) over right arrow) -mixed dislocation in wurtzite gallium nitride. For this dislocation, two core configurations were found to occur: a 5/7-atoms ring and a complex double 5/6-atoms ring configurations. Both core configurations were found to induce in the bandgap as well deep as shallow gap states.
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页码:2940 / +
页数:2
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