First-principles predictions of the geometries and electronic structures of tungsten ditelluride nanoribbons

Publication date: Available online 20 June 2018Source: Physics Letters AAuthor(s): Jian-Hao Wang, Wei Yang, Mei Zhou, Yu Yang, Jie-Yun Yan, Ping ZhangAbstractFirst-principles calculations are carried out to predict the structures and electronic properties of 2H- and Td-WTe2 nanoribbons with different termination edges. It is found that the 2H-WTe2 nanoribbon along the armchair direction and the Td-WTe2 nanoribbon along the X direction show semiconducting characters with tunable band gaps. The 2H-WTe2 nanoribbon along the zigzag direction and the Td-WTe2 nanoribbon along the Y direction show metallic characters.

Source: Physics Letters A - July 10, 2018 Category: Physics Source Type: research