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¸÷λ¸ßÊÖ£¬ ÎÒ×î½ü¸ù¾ÝvaspÊÖ²áÀïÃæµÄGW¼ÆËãSiµÄ´øÏ¶µÄÀý×Ó£¨http://cms.mpi.univie.ac.at/wiki/index.php/Bandgap_of_Si_in_GW£©×ö¼ÆË㣬½á¹û·¢ÏÖÎÒ¼ÆËã³öÀ´µÄSiµÄHOMO=156.8865 eV£¬¶øLUMO=142.2128 eV£¬OUTCARÖзÑÃ×Äܼ¶µÄλÖÃÔÚ144.9269 eV¡£ [iklhrd]$ ./gap_GW.sh OUTCAR HOMO: band: 4 E= 156.8865 LUMO: band: 5 E= 142.2128 ÕâÀïHOMO±ÈLUMOÒª¸ß£¬ÕâÑùµÄ»°£¬ËµÃ÷ÊǽðÊôÐÔÖʰ¡ ÎÒÊÇÓõÄÀý×ÓÀïÃæµÄÊäÈëÎļþ£¬µ½µ×ÊÇÄÄÀïµÄÎÊÌâÄØ£¿Èý²½µÄINCAR·Ö±ðÊÇ 1groundstate.dft ISMEAR = 0 SIGMA = 0.05 EDIFF = 1E-8 ALGO = Very_Fast 2DFT.virtual.orbitals # Frequency dependent dielectric tensor without # local field effects ALGO = Exact NBANDS = 64 LOPTICS = .TRUE. ; CSHIFT = 0.1 NEDOS = 2000 # you might try #LPEAD = .TRUE. ISMEAR = 0 SIGMA = 0.05 EDIFF = 1E-8 3GW # Frequency dependent dielectric tensor including # local field effects within the RPA (default) or # including changes in the DFT xc-potential (LRPA=.FALSE.). # N.B.: beware one first has to have done a # calculation with ALGO=Exact, LOPTICS=.TRUE. # and a reasonable number of virtual states (see above) ALGO = GW0 ; LSPECTRAL = .TRUE. ; NOMEGA = 50 # be sure to take the same number of bands as for # the LOPTICS=.TRUE. calculation, otherwise the # WAVEDER file is not read correctly NBANDS = 64 # Add this to update the quasiparticle energies # in the Green's function (GW0) #NELM = 4 ISMEAR = 0 SIGMA = 0.05 EDIFF = 1E-8 |
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