• 文献标题:   Magnetic field driven instability of a charged center in graphene
  • 文献类型:   Article
  • 作  者:   GAMAYUN OV, GORBAR EV, GUSYNIN VP
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Bogolyubov Inst Theoret Phys
  • 被引频次:   23
  • DOI:   10.1103/PhysRevB.83.235104
  • 出版年:   2011

▎ 摘  要

It is shown that a magnetic field dramatically affects the problem of supercritical charge in graphene, making any charge in gapless theory supercritical. The cases of a radially symmetric potential well and a Coulomb center in a homogeneous magnetic field are considered. The local density of states and polarization charge density are calculated in the first order of perturbation theory. It is argued that the magnetically induced instability of the supercritical Coulomb center can be considered as a quantum-mechanical counterpart of the magnetic catalysis phenomenon in graphene.