Lattice thermal conductivity of graphene with conventionally isotopic   defects
  The thermal conductivity of doped graphene flake of finite size is investigated with emphasis on the influence of mass of substituting atoms on this property. It is shown that the graphene doping by small concentrations of relatively heavy atoms results in a disproportionately impressive drop of lattice thermal conductivity. 
Vadym Adamyan and Vladimir Zavalniuk
cond-mat.mes-hall cond-mat.mtrl-sci