As I am a beginner to GC-SCF DFT using Quantum Espresso, kindly help me in knowing the prcedure of caclulating the adsorption energy., what is formula used to calculate it.
&CONTROL
calculation='scf'
title='Optimization of bulk of Cu(4x4)'
restart_mode='from_scratch',
prefix='gc_dft_cu_111_scf'
etot_conv_thr=1.0D-06
forc_conv_thr=1.0D-03
nstep=1000
pseudo_dir = '/home/saroj3/scratch/cu_111_acet',
outdir = '/home/saroj3/scratch/cu_111_acet/gc_dft_oh_cu_111/gc_dft_cu_111_scf',
tprnfor = .true.,
/
&SYSTEM
ibrav=14
celldm(1)=19.4774
celldm(2)=1
celldm(3)=2.75696
celldm(4)=0
celldm(5)=0
celldm(6)=0.5
nat=64,
ntyp=1,
nspin=2,
vdw_corr='DFT-D',
starting_magnetization(1)=0.5,
ecutwfc=50,
ecutrho=500,
occupations='smearing',
smearing='mp',
degauss=0.02
nosym=.TRUE.,
lda_plus_u=.false.,
assume_isolated='esm', esm_bc='bc2'
lgcscf = .TRUE.
gcscf_mu = -4.4
gcscf_conv_thr = 1.d-2
/
&ELECTRONS
diagonalization='david'
conv_thr=1.0d-6
mixing_mode='local-TF'
mixing_beta=0.7
electron_maxstep=1000,
/
&IONS
ion_dynamics='bfgs'
/
ATOMIC_SPECIES
Cu 63.546 Cu.pbe-dn-kjpaw_psl.0.2.UPF
ATOMIC_POSITIONS (angstrom)
Cu 0.0000000000 0.0000000000 2.1039000000 0 0 0
Cu 2.5767800000 0.0000000000 2.1039000000 0 0 0
Cu 5.1535500000 0.0000000000 2.1039000000 0 0 0
Cu 7.
7303300000 0.0000000000 2.1039000000 0 0 0
Cu 1.2883900000 2.
2315500000 2.1039000000 0 0 0
Cu 3.8651700000 2.
2315500000 2.1039000000 0 0 0
Cu 6.4419500000 2.
2315500000 2.1039000000 0 0 0
Cu 9.0187200000 2.
2315500000 2.1039000000 0 0 0
Cu 2.5767800000 4.4631100000 2.1039000000 0 0 0
Cu 5.1535600000 4.4631100000 2.1039000000 0 0 0
Cu 7.
7303400000 4.4631100000 2.1039000000 0 0 0
Cu 10.3071100000 4.4631100000 2.1039000000 0 0 0
Cu 3.8651700000 6.6946600000 2.1039000000 0 0 0
Cu 6.4419500000 6.6946600000 2.1039000000 0 0 0
Cu 9.0187200000 6.6946600000 2.1039000000 0 0 0
Cu 11.5955000000 6.6946600000 2.1039000000 0 0 0
Cu 1.2883400000 0.
7438200000 4.2078000000 0 0 0
Cu 3.8651200000 0.
7438200000 4.2078000000 0 0 0
Cu 6.
4418900000 0.
7438200000 4.2078000000 0 0 0
Cu 9.0186700000 0.
7438200000 4.2078000000 0 0 0
Cu 2.5767300000 2.
9753800000 4.2078000000 0 0 0
Cu 5.1535100000 2.
9753800000 4.2078000000 0 0 0
Cu 7.
7302800000 2.9753800000 4.2078000000 0 0 0
Cu 10.3070600000 2.
9753800000 4.2078000000 0 0 0
Cu 3.8651200000 5.
2069300000 4.2078000000 0 0 0
Cu 6.
4419000000 5.2069300000 4.2078000000 0 0 0
Cu 9.0186700000 5.
2069300000 4.2078000000 0 0 0
Cu 11.5954500000 5.
2069300000 4.2078000000 0 0 0
Cu 5.1535100000 7.
4384900000 4.2078000000 0 0 0
Cu 7.
7302900000 7.4384900000 4.2078000000 0 0 0
Cu 10.3070600000 7.
4384900000 4.2078000000 0 0 0
Cu 12.8838400000 7.
4384900000 4.2078000000 0 0 0
Cu 10.
3054809557 1.4884138076 6.2366103369
Cu 2.
5754608211 1.4888633271 6.2366647976
Cu 5.1523330640 1.4888548480 6.
2365555119Cu 7.
7289978720 1.4883941504 6.2366230851
Cu 11.5941907913 3.
7202323416 6.2362172708
Cu 3.
8639148278 3.7204193199 6.2368356979
Cu 6.
4402638906 3.7198969875 6.2363993776
Cu 9.0170880805 3.7213000663 6.
2366440344Cu 12.8827843912 5.
9517581935 6.2362016854
Cu 5.1516881418 5.
9515206673 6.2364437378
Cu 7.7292790683 5.
9518983520 6.2360975291
Cu 10.
3053763756 5.9520624367 6.2370569907
Cu 14.1709160346 8.1830767046 6.
2364933512Cu 6.
4412579689 8.1827129098 6.2364756331
Cu 9.0173595498 8.1828108455 6.2361940415
Cu 11.5930669210 8.1827530538 6.
2368039560Cu 10.
3052332856 0.0012485255 8.2885146185
Cu 2.
5749867059 0.0013809359 8.2879532443
Cu 5.1513109127 0.0013437366 8.2878944074
Cu 7.
7277679778 0.0013458659 8.2885540421
Cu 11.5933252102 2.2327754985 8.2888289720
Cu 3.
8632113504 2.2327620564 8.2881936345
Cu 6.4398492158 2.2328001619 8.2889274190
Cu 9.0162878727 2.2332534469 8.2884698603
Cu 12.8814921082 4.
4649105840 8.2883393039
Cu 5.1516088814 4.
4646635549 8.2885195826
Cu 7.
7278892087 4.4646743673 8.2876200818
Cu 10.3051308532 4.
4648191406 8.2875640879
Cu 14.1702399736 6.6958976303 8.2887636689
Cu 6.4399789215 6.6957019165 8.2878080215
Cu 9.0159991774 6.6966752539 8.2883993164
Cu 11.5933091198 6.6957798706 8.2876979446
K_POINTS (AUTOMATIC)
3 3 1 0 0 0