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

Abstract

We investigate the quantum transmission through the n-p-n heterojunction of massive 8-Pmmn borophene. It is found that the Dirac mass of the electron interacts nontrivially with the anisotropy of the 8-Pmmn 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. Secondly, even if the equal-energy surfaces in the p and n parts do not encounter in the k-space, finite transmission is allowed to occur as well. In addition, the existence of Dirac mass can change the reflection manner from the retroreflection to the specular reflection under appropriate conditions. The findings in this work can be helpful in describing the quantum transport properties of the heterojunction based on 8-Pmmn borophene.

Effect of the Rashba interaction on the tunneling time and Hartman effect in an 8-Pmmn borophene superlattice

“…In 2D materials based-systems, the spintronic properties can be controlled by the Rashba interaction, which can be adjusted by an external electric field [25]. The transport properties in the structures based on the 8-Pmmn borophene have been extensively investigated over the recent years [26][27][28][29][30][31][32][33][34][35][36][37]. The anomalous heat transport through 8-Pmmn borophene sheet has been studied by Sengupta et al [28].…”