Research Article

Properties of the Free-Standing Two-Dimensional Copper Monolayer

Figure 3

Phonon dispersion and phonon density of states of the 2D Cu monolayer. Γ (0, 0, 0), M (0, 1/2, 0), and K (1/3, 2/3, 0) refer to special points in the first Brillouin zone in reciprocal space.