First-principles study of Sr adsorption on InN (0001)

被引：4
|
作者：
Wang, Jianli [1 ]
Wu, Xiaoshan [1 ]
Dai, Xianqi [2 ]
Bai, Dongmei [3 ]
机构：
[1] Nanjing Univ, Dept Phys, Nanjing Natl Lab Microstruct, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
[2] Zhengzhou Teachers Coll, Dept Phys, Zhengzhou 450044, Henan, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL B | 2010年 / 73卷 / 01期
关键词：
STRUCTURAL-PROPERTIES; INN(0001) SURFACE; ALN; GAN;
D O I：
10.1140/epjb/e2009-00406-x
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Structures of Sr adsorbed on InN (0001) surfaces are theoretically investigated by first-principles calculations. The adsorption energies of Sr on InN (0001) decrease with decreasing Sr coverage. An InN (0001)-(2 x2) surface structure covered by a 1/4 monolayer of Sr at the T-4 sites may be the most energetically favourable. Sr atoms may substitute indium atoms, or accumulate at the voids inside InN films. The interstitial Sr defects may act as a potential source of compensation for the p-type behaviour of Sr-doped InN at the surface.
引用
收藏
页码：75 / 78
页数：4
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