Piezoelectricity and electronic structures of ZnO thin films: A density functional theory study

2015 ◽  
Vol 642 ◽  
pp. 45-50 ◽  
Author(s):  
Aihua Zhang ◽  
Wei Liu ◽  
Yan Zhang
Keyword(s):  
Thin Films ◽  
Density Functional Theory ◽  
Electronic Structures ◽  
Density Functional ◽  
Zno Thin Films ◽  
Density Functional Theory Study ◽  
Functional Theory

Density functional theory study of high-energy metal (Al, Mg, Ti, and Zr)/CuO composites

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90206-90211 ◽  
Author(s):  
Guolin Xiong ◽  
Chunhong Yang ◽  
Weihua Zhu ◽  
Heming Xiao
Keyword(s):  
Density Functional Theory ◽  
Electronic Structures ◽  
Density Functional ◽  
High Energy ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Metastable Intermolecular Composites ◽  
Metal Layers

We investigated the geometric and electronic structures and stability of high-energy metal metastable intermolecular composites (Al, Mg, Ti, and Zr)/CuO(111) between metal layers and a CuO(111) substrate by density functional theory.

Germanium Adsorption on SrTiO3 (001) 2×1 Surface: A Density Functional Theory Study

2012 ◽  
Vol 463-464 ◽  
pp. 484-488
Author(s):  
Jun Jie Wang ◽  
Isabelle Lefebvre
Keyword(s):  
Density Functional Theory ◽  
Electronic Structures ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Lattice Parameter ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Adsorption Sites ◽  
Site Selectivity ◽  
Threading Defects

Integrating germanium on Si is one of the major challenges of epitaxial growth and presents important applicative interest. Recently, SrTiO3 was adopted as a buffer layer to accommodate the mismatch between Ge and Si. Germanium can take its bulk lattice parameter as soon as the growth begins without threading defects on SrTiO3 surface. However, the details of Ge adsorption on SrTiO3 surface are not clear. In present work, the electronic structures of Ge deposited on the SrTiO3 (001) 2×1 Double Layer (DL) TiO2 surfaces were investigated by means of density functional theory calculations. Several stable adsorption sites are identified. It is found that the germanium adsorption shows site selectivity and causes noticeable surface distortion. The charge transfer from germanium atom to surface contributes to the formation of strong Ge-O bondings and surface metallization.

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