# H compressed simple cubic, metallic. # Frozen-phonon calculations # GGA ndtset 3 ixc 11 #Unperturbed geometry xred1 0.0 0.0 0.0 0.25 0.0 0.0 0.50 0.0 0.0 0.75 0.0 0.0 getwfk1 0 #Transverse frozen-phonon at q=0.5 0.0 0.0 xred2 0.0 0.0 0.001 0.25 0.0 -0.001 0.50 0.0 0.001 0.75 0.0 -0.001 #Transverse frozen-phonon at q=0.25 0.0 0.0 xred3 0.0 0.0 0.002 0.25 0.0 0.000 0.50 0.0 -0.002 0.75 0.0 0.000 #Common data acell 10.40 2*2.60 chkprim 0 ntypat 1 znucl 1.0 natom 4 typat 4*1 nstep 20 tolvrs 5.0d-15 ecut 20.0 nband 12 getwfk 1 occopt 7 tsmear 0.2 kptopt 1 ngkpt 1 4 4 shiftk 0.5 0.5 0.5 pp_dirpath "$ABI_PSPDIR" pseudos "PseudosGTH_pwteter/01h.pspgth" #%% #%% [setup] #%% executable = abinit #%% [files] #%% files_to_test = #%% t73.out, tolnlines = 1, tolabs = 4.010e-09, tolrel = 5.000e-03 #%% [paral_info] #%% max_nprocs = 3 #%% [extra_info] #%% authors = Unknown #%% keywords = #%% description = #%% H, compressed simple cubic, frozen-phonon calculations corresponding #%% to test 72. No linear XC core correction. #%% The total energy of the quadruple cell is -2.2457924013451 Ha, #%% in excellent agreement with the result of test 72. #%% The frozen-phonon (from forces) calculation of the 2DTE for the q(1/2 0 0) #%% case gives 2.0769790d-2 . A better finite-difference scheme, using #%% a doubled displacement to cancel the finite-difference error, gives #%% 2.076834d-2. #%% The frozen-phonon (from forces) calculation of the 2DTE for the q(1/4 0 0) #%% case gives 1.105321d-2 . A better finite-difference scheme, using #%% a doubled displacement to cancel the finite-difference error, gives #%% 1.105275d-2 . #%%