Table 1 Energetic stability of monolayer (ML) and bilayer (BL) GaTe with respect to the corresponding structure in the hexagonal β form whose ground state total energy is set to zero.

From: Two-dimensional single crystal monoclinic gallium telluride on silicon substrate via transformation of epitaxial hexagonal phase

Geometry ML

E (meV/atom)

Geometry BL

E (meV/atom)

h-ML β

0

h-BL β

0

h-ML G2

+3

h-BL G2

+2.3

  

h-BL ϵ

−0.4

m-ML

+1.3

m-BL

−2.3

  

hetero-BL

+8

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