Bound states in gapped graphene with impurities: Effective low-energy description of short-range interactions

Article

关键词: QUANTUM-MECHANICS;    CALOGERO MODEL;    COULOMB FIELD;    RENORMALIZATION;    ELECTRON;   

DOI  :  10.1103/PhysRevB.78.205429

来源: SCIE

【 摘 要 】

We obtain a bound-state spectrum of low-energy excitations near the Fermi points of gapped graphene in the presence of a charge impurity. The effects of possible short-range interactions induced by the impurity are modeled by suitable boundary conditions. The spectrum in the subcritical region of the effective Coulomb coupling is labeled by a parameter which characterizes the boundary conditions and determines the inequivalent quantizations of the system. In the supercritical region we obtain a renormalization-group flow for the effective Coulomb coupling.

【 授权许可】

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