Tuning the energy gap of bilayer <italic>α</italic>-graphyne by applying strain and electric field

Tuning the energy gap of bilayer α-graphyne by applying strain and electric field

Hang Yang, Wen-Zhi Wu, Yu Jin, Guo Wan-Lin^†,

(a) A series of band structures of bilayer graphyne under strains of ±8%, ±4%, and 0, without external electric fields. (b) Band structures of strain-free bilayer graphyne under electric fields of 0.04, 0.06, 0.1, 0.2, and 0.4 V/Å.