Dear users
I want to
calculate the exchange parameters for the Heisenberg model starting from
density functional theory. First, the Hamiltonian in the basis of
Wannier functions (WF) is constructed using Wannier90. Then, TB2J is
used to calculate the exchange parameters. but i found the problem in runining in Wannier 90.x .I'm trying
to construct WF Hamiltonian but when i'm running with command :
wannier90.x -pp fe_up (fe_up is input file) is gives me
Error: Problem opening input file wannier90.X.win
Error: examine the output/error file for details
Best regards