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Effect of normal strain and external electric field on electronic properties of the GeC bilayer: A first-principles study
oleh: Luo Min, Xu Yu E, Shen Yu Hao
Format: | Article |
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Diterbitkan: | AIP Publishing LLC 2019-12-01 |
Deskripsi
The electronic properties of the GeC bilayer with different stacking patterns are investigated using density functional theory. A different behavior shows up when applying normal strain and electric field (E-field). Under normal strain, the bandgap becomes very elastic and presents an indirect-to-direct bandgap transition. By applying the E-field, the intrinsic bandgap swiftly reduces to zero. The major modulation of the bandgap is mainly due to the migration of Ge-p orbitals in the conduction band. Our results reveal the flexible electronic properties of the GeC bilayer, which would provide a theoretical reference for the development of the GeC bilayer.