Program

O.13 -- Oral, NCTP-42

Date: Tuesday, 1 August 2017

Time: 14h50 - 15h10

Electronic structures in Penta - Graphene

Vu Thanh Tra (1), Thai Thanh Lap (2), Nguyen Thi Kim Quyen (2)

(1) Department of Physics, School of Education, Can Tho University, Can Tho, Vietnam (2) School of Graduate, College of Natural Sciences, Can Tho University, Can Tho, Vietnam.

Recently, Penta – Graphene is known as a new outstanding of carbon allotrope. This structure consists of sp2 - hybridized carbon atoms also sp3 - hybridized carbon atoms which makes its electronic properties more interesting than others. The electronic band structures of this new material have been studied using in this paper by indicating different parameters’ contributions. Especially, this model is supplemented interaction between sp2 - hybridized carbon atoms and the nearest 2nd – neighbor atoms that leads these results to reliance and preciseness. Moreover, this study shows that, unlike Graphene, the onsite energy of sp2 - hybridized carbon atoms in this structure is not zero. Therefore, the significance of structure parameters in energy band is pointed out which have not discussed in other researches. Furthermore, for convincing investigation of the energy band, we continued to calculate the density of states and the transmission coficent by using Green’s function formalism. More importantly, we consider the effect of vertical electric fields on the electronic properties of Penta - Graphene with hoping to control the gap. These results are important to fully understand structure of Penta – Graphene and motivate to Penta – Graphene for applications in nano electronics.

Presenter: Vu Thanh Tra