Quantum transmission through the n-p-n heterojunction of massive 8-borophene.

We investigate the quantum transmission through the n-p-n heterojunction of massive 8-borophene. It is found that the Dirac mass of the electron interacts nontrivially with the anisotropy of the 8-borophene, leading to the occurrence of new transmission behaviors in this n-p-n heterojunction. Firstly, the effective energy range of nonzero transmission can be reduced but deviates from the mass amplitude, which induces the further controllability of the transmission property.