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102 changes: 102 additions & 0 deletions Fe/Fe.abi
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##############################################################
###### This is an ABINIT input for BCC iron ######
###### It only works with a developer's version for now ######
###### It will be available in v10.6 ######
##############################################################

# Multi_dataset parameters
ndtset 2 # Two datasets
jdtset 1 2 # First one is DFT, second one is DFT+DMFT
getden -1 # DFT+DMFT restarts from DFT density

############################
# Structural Parameters
############################

# Definition of unit cell

acell 3*5.44761 # Lattice parameter
rprim -0.5 0.5 0.5 # Primitive cell of BCC lattice
0.5 -0.5 0.5
0.5 0.5 -0.5

# Definition of atoms
ntypat 1 # Only one type of atom
znucl 26 # Atomic number of Fe

natom 1 # Only one atom
typat 1 # Type of atom
xred 0.0 0.0 0.0 # Atom at the center of the unit cell

# Definition of pseudopotentials
pp_dirpath "$ABI_PSPDIR" # Repository with pseudopotentials
pseudos "26fe.lda2.paw" # LDA pseudopotential

# Definition of the reciprocal grid
kptopt 1 # Take into account every symmetry
ngkpt 14 14 14 # Size of the Monkhorst-Pack grid
nshiftk 2 # Recommended shifts for BCC
shiftk 0.25 0.25 0.25
-0.25 -0.25 -0.25

############################
# Energy Parameters
############################

ecut 24 # Maximal plane-wave kinetic energy cut-off, in Hartree
pawecutdg 50 # PAW: Energy Cutoff for the Double Grid
nband 20 # Number of bands
occopt 3 # Smearing type: simple Fermi-Dirac scheme
tsmear 300 K # Electronic smearing temperature

############################
# DFT Calculation
############################

usedmft1 0 # DFT alone
nstep1 100 # Maximal number of iterations for the DFT convergence
tolvrs 1.0d-18 # Tolerance of the density for DFT convergence

# Definition of the spin properties
nsppol 2 # Spin-polarized
nspden 2

############################
# DMFT Calculation
############################

usedmft2 1 # DMFT calculation
nstep2 100 # Maximal number of iterations for the DFT+DMFT convergence
nline2 15 # Number of line minimisations
nnsclo2 10 # Number of non-self consistent loops

# Definition for DMFT loop
dmftbandi 5 # First KS band included in the projection for Wannier orbitals
dmftbandf 13 # Last KS band included in the projection for Wannier orbitals
dmft_nwli 5000 # Number of Matsubara frequencies
dmft_iter 1 # Number of DMFT loops
dmft_mxsf 0.8 # Mixing of the old and new self-energy at every iterations.
dmft_dc 6 # Double counting type. 6 is non-magnetic AMF.

# Definition of impurity solver
dmft_solv 7 # TRIQS/CTHYB with full Slater Hamiltonian
dmftqmc_l 4000 # Number of time slices for G(tau) and Delta(tau)
dmftqmc_n 1.d6 # Number of QMC measurements (n_cycles) summed over all CPUs
dmftqmc_therm 100 # Nb of thermalization cycles at the first iteration
dmftctqmc_meas 1000 # Nb of sweeps between each measurement (length_cycle)
dmftctqmc_basis 0 # Cubic basis in order not to have off-diagonal elements
dmft_triqs_off_diag 0 # Only take into account the diagonal elements
dmft_triqs_wmax 1.0 # DLR frequencies in [-wmax,wmax]
dmft_shiftself 1.d-1 # Initial static shift between spin channels of self-energy to start in a magnetic state
dmft_triqs_therm_restart 1 # Nb of thermalization cycles when restarting from the previous iteration

# Definition of correlations
usepawu1 4 #
usepawu2 14 # Non-magnetic DFT, magnetism only arises from DMFT
dmatpuopt 2 #
lpawu 2 # Angular momentum: apply DMFT on all d orbitals
upawu1 0.00 eV
upawu2 5.5 eV # Values of U (same as K. Haule)
jpawu1 0.00 eV
jpawu2 0.84 eV # Values of J (same as K. Haule)