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Electron with arbitrary pseudo-spins in multilayer graphene |
Worasak Prarokijjak, Bumned Soodchomshom |
Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand |
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Abstract 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× (ħ/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.
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Received: 22 September 2014
Revised: 13 November 2014
Accepted manuscript online:
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PACS:
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81.05.ue
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(Graphene)
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14.80.Va
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(Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.))
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11.30.-j
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(Symmetry and conservation laws)
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Fund: Project supported by the Kasetsart University Research and Development Institute (KURDI) and Thailand Research Fund (TRF) (Grant No. TRG5780274). |
Corresponding Authors:
Bumned Soodchomshom
E-mail: Bumned@hotmail.com,fscibns@ku.ac.th
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Cite this article:
Worasak Prarokijjak, Bumned Soodchomshom Electron with arbitrary pseudo-spins in multilayer graphene 2015 Chin. Phys. B 24 048101
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