Chemistry Reference
In-Depth Information
Fig. 3.
Schematic diagram of compressive strained Brillouin Zone along the
Z
-direction.
Fig. 4. (Color online) Branch of flexural modes with compressive strain along
Z
-direction.
The values of acoustic and optical phonon frequency at the symmetry
point on the Brillouin zone (listed in the Tables 1 and 2 for uni-axially
strained along
Z
A
-direction) suggest that the optical phonon modes
at all the symmetry point harden and the acoustic phonon modes soften.
Interestingly, optical phonon modes harden more for graphene than that
of BN-monolayer in all the cases except at the Γ point, where the optical
-and
