Robust ferromagnetism in hexagonal honeycomb transition metal nitride monolayer

HIGHLIGHTS

• What: The authors design two kinds of twodimensional nitrides VN2 and FeN2 both with a hexagonal lattice. The authors determine the ferromagnetic ground states of VN2 and FeN2 monolayers through the energy calculations and the Curie temperatures of 222 K and 238 K are estimated by solving the Heisenberg model using the Monte Carlo simulation method. The authors design three structures of MN2 (M=V and Fe) with the M layer intercalated between two N layers, shown in Figure 1a-c. The formation of the N-N bond is the main reason why the hexagonal structure has . . .
  

   

  

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