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3Â¥2024-01-07 12:28:46
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Take TaAs as an example:
The steps are shown below:

Construct a structure file using w2web:
Generate the input structure file for TaAs using the w2web interface, the makestruct utility or from a cif file. The following lattice parameters for TaAs were used: a = b = 3.436 Å; c = 11.640 Å and angles ¦Á = ¦Â = ¦Ã = 90¡ã. TaAs crystallizes in a body-centered-tetragonal structure with space group I4 1 md (No. 109). The unit cell contains 2 non-equivalent atoms with fractional coordinates Ta (0, 0, 0.75), and As(0, 0, 0.1677).

Initialize the calculation with PBE, 3% reduction of muffin-tin radii RMT, the product min(RMT)Kmax = 7, and 300 k points in the whole BZ.
init_lapw -b -vxc 13 -red 3 -rkmax 7 -numk 300

Perform a self-consistent field (SCF) calculation with energy convergence of 10−4 Ry, and charge convergence of 10−3 e.
run_lapw -ec 0.0001 -cc 0.001

Save the calculation to the folder noSOC.
save_lapw -d noSOC

Initialize the spin-orbit coupling (SOC) using all the default parameters and run a SCF cycle with SOC.
init_so_lapw

run_lapw -ec 0.0001 -cc 0.001 -so
2Â¥2024-01-07 11:34:11
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