Journal
PHYSICAL REVIEW B
Volume 76, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.76.085425
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Funding
- Grants-in-Aid for Scientific Research [19054004] Funding Source: KAKEN
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We present a theoretical study on the orbital magnetism in multilayer graphenes within the effective mass approximation. The Hamiltonian and thus susceptibility can be decomposed into contributions from subsystems equivalent to monolayer or bilayer graphene. The monolayer-type subband exists only in odd layers and exhibits a delta-function susceptibility at epsilon(F)=0. The bilayer-type subband appearing in every layer number gives a singular structure in the vicinity of epsilon(F)=0 due to the trigonal warping as well as a logarithmic tail away from epsilon(F)=0. The integral of the susceptibility over energy is approximately given only by the layer number.
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