Electron with arbitrary pseudo-spins in multilayer graphene

• 来源期刊: 中国物理B（英文版）
• 关键词: multilayer graphene exotic particles particle physics
• 年，卷（期）: 2015,（4）
• 页码范围: 048101-1-048101-6
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/4/048101

摘要

Using the low-energy effective Hamiltonian of the ABC-stacked multilayer graphene, the pseudo-spin coupling to real orbital angular momentum of electrons in multilayer graphene is investigated. We show that the electron wave function in N-layer graphene mimics the behavior of a particle with a spin of N × (}/2), where N={1, 2, 3, . . .}. It is said that for N>1 the low-energy effective Hamiltonian for ABC-stacked graphene cannot be used to describe pseudo-spin-1/2 particles. The wave function of electrons in multilayer graphene may behave like fermionic (or bosonic) particle for N being odd (or even). In this paper, we propose a theory of graphene serving as a host material of electrons with arbitrary pseudo-spins tunable by changing the number of graphene layers.