  Using the low-energy effective Hamiltonian of the ABC-stacked multilayer
graphene, pseudo spin coupling to real orbital angular momentum of electron in
multilayer graphene is investigated. We show that electron wave function in
N-layer graphene mimics behavior of particle with spin of N/2. It is said that
for N greater than 1 the low-energy effective Hamiltonian for ABC-stacked
graphene is no longer used to describe pseudo spin 1/2-particle wave function.
The wave function of electron in multilayer graphene may behave like fermionic
(or bosonic) particle when N is odd (or even). This work proposes a theory of
graphene as a host material of electron with arbitrary pseudo spins, tunable by
changing number of graphene layers.
