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LEPSILON = TRUE µÄͬʱÊÇ·ñÐèÒªÉèÖà LOPTICS = TRUE£¿

LOPTICS: frequency dependent dielectric matrix

LEPSILON: static dielectric matrix, ion-clamped piezoelectric tensor and the Born effective charges using density functional perturbation theory.

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[ Last edited by cenwanglai on 2011-12-26 at 16:31 ]
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LEPSILON = TRUE
Pros compared to LOPTICS=.TRUE.
no conduction bands required.
local field effects included on the RPA and DFT level (see ACFDT/RPA calculations).

Cons compared to LOPTICS=.TRUE.
presently only static properties available.
requires a relatively time consuming iterative process.
does not support HF or hybrid functionals, whereas LOPTICS=.TRUE. and the GW routines do.
ÎÒÃDz»½¨ÒéÑ¡ÔñLOPTICS=.TRUE.ºÍLEPSILON=.TRUE.ÔÚÒ»´ÎÔËÐÐÖÐ(¾¡¹ÜËüÔÚijЩ°æ±¾ÖпÉÄÜÓÐЧ)¡£
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franch(½ð±Ò+2): 2011-12-26 21:31:31
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