Fig. 2. (a) Elastic stiffness constants, (b) bulk (B), shear (G) and Young's (E) moduli, and (c) Poisson's and Pugh's ratios for Al/Cu/Gn. Solid (dashed) lines show quadratic (linear) fitting results. (d) Phonon dispersion curves and atom-resolved phonon DOS in Al/Cu/G1 at 0 and 200 K.
