• 文献标题:   Magnetic moments and Kondo effect near vacancies and resonant scatterers in graphene
  • 文献类型:   Article
  • 作  者:   HAASE P, FUCHS S, PRUSCHKE T, OCHOA H, GUINEA F
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Gottingen
  • 被引频次:   32
  • DOI:   10.1103/PhysRevB.83.241408
  • 出版年:   2011

▎ 摘  要

The effect of electronic interactions in graphene with vacancies or resonant scatterers is investigated. We apply dynamical mean-field theory in combination with quantum Monte Carlo simulations, which allow us to treat nonperturbatively quantum fluctuations beyond Hartree-Fock approximations. The interactions narrow the width of the resonance and induce a Curie magnetic susceptibility, signaling the formation of local moments. The absence of saturation of the susceptibility at low temperatures suggests a ferromagnetic Kondo effect.