  Multilayer graphene (MLG) grown by chemical vapor deposition (CVD) is a
promising material for electronic and optoelectronic devices. Understanding the
stacking configuration and interlayer coupling of MLGs is technologically
relevant and of importance for the device applications. Here, we reported a
kind of twisted MLGs (tMLGs), which are formed by stacking one graphene
monolayer on the top of AB-stacked MLG by rotating a certain angle between
them. The twist angle of tMLGs are identified by the twist-related modes, R and
R'. With increasing the total layer number of N, the observed interlayer shear
modes in the tMLG flake always follow those of AB-stacked (N-1)LG, while the
observed interlayer breathing modes always follow those of AB-stacked NLG,
independent of its twist angle. The layer breathing coupling of the tMLGs is
almost identical to that of mechanically-exfoliated tMLGs, which demonstrates
the high quality of MLGs grown by CVD. This study provides an applicable
approach to probe the stacking configuration and interlayer coupling of MLGs
grown by CVD or related methods. This work also demonstrates the possibility to
grow MLG flakes with a fixed stacking configuration, $e.g.$, t(1+$n$)LG, by the
CVD method.
