The electronic properties of two-dimensional hexagonal germanium, so called germanene, are investigated using first-principles simulations. Consistent with previous reports, the surface is predicted to have a "poor" metallic behavior, i.e., being metallic with a low density of states at the Fermi level. It is found that biaxial compressively strained germanene is a gapless semiconductor with linear energy dispersions near the K points-like graphene. The calculated Fermi velocity of germanene is almost independent of the strain and is about 1.7× 106 m/s, quite comparable to the value in graphene. © 2010 American Institute of Physics.
CITATION STYLE
Houssa, M., Pourtois, G., Afanas’Ev, V. V., & Stesmans, A. (2010). Electronic properties of two-dimensional hexagonal germanium. Applied Physics Letters, 96(8). https://doi.org/10.1063/1.3332588
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