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1. ÃæÁÙµÄÎÊÌ⣺½á¹¹ÓÅ»¯ÊDz»ÊÕÁ²£¬ÌáʾÐÅÏ¢ÈçÏ£º
Message: SCF not converging. Choose "Use Smearing" on DMol3 SCF panel
or set "Occupation  Thermal" in the input file.
You may also need to change spin or use symmetry.

2. ½á¹¹ÓÅ»¯±¾ÉíûÓÐÎÊÌ⣬Êǵ¥µãÄÜÁ¿¼ÆËã²»ÄÜÊÕÁ²£¬ËùÒÔÓõ¥µãÄÜÁ¿¼ÆËãÀ´·ÖÎö±È½Ï¡£Ñ¡ÔñµÄÌåϵÊǺ¬ÓÐÒ»¸ö½ðÊôÔ­×ÓµÄÌåϵ£¨Íé»ùÂÁÓëÒ»¸öÓлú·Ö×Ó£©¡£ÒÔǰ×Éѯ¹ý´´ÌڿƼ¼µÄ¹¤³Ìʦ£¬º¬ÓнðÊôµÄÌåϵ£¬ÄÜÁ¿¼ÆËã²»ÈÝÒ×ÊÕÁ²£¬ÐèÒªÉ趨Smearing¡£µ«ÓÐʱºòÉèµÄÌ«µÍ»¹ÊDz»ÄÜÊÕÁ²£¬Éè¸ßÁËÓÖÅÂËùµÃ½á¹¹²»ºÏÀí¡£

3. °´ÕÕÒ»Ð©ÍøÓѺÍ×Ô¼ºµÄ¾­Ñ飬¿ÉÒÔ²ÉÓÃÖð½¥Ôö¼Ó¾«¶ÈµÄ·½·¨À´Ïû³ý²»ÊÕÁ²ÎÊÌâ¡£µ«½ñÌì·¢ÏÖÒ»¸ö¡°Ææ¹Ö¡±µÄÏÖÏó£ºÓÃFine¾«¶Èµ¥µãÄÜÁ¿ÄܺܿìÊÕÁ²£¬¶øÓÃCoarse¾«¶Èµ¥µãÄÜÁ¿ÔÚµü´ú150´ÎÈÔ²»ÄÜÊÕÁ²¡£

4. ͨ¹ý×Ðϸ·ÖÎö£¬²Â²âµÍ¾«¶È²»ÄÜÊÕÁ²µÄÔ­Òò£º»ù×é(Basis set)»ò¹ìµÀ½Ø¶Ï(Orbital cutoff)µÄÑ¡ÔñºÜÖØÒª¡£ÒÔǰ¼ÆËãʱѡÔñ¾«¶È¶¼ÊÇͨ¹ýÔÚSetup±êÇ©ÏÂÑ¡ÔñFine¡¢Medium»òCoarse£¬Ã»ÓÐÉèÖþßÌåµÄ²ÎÊý¡£DMol3µÄµ¥µãÄÜÁ¿¼ÆËãµÄElectronic±êÇ©ÏÂÓÐËĸöµØ·½¿ÉÒÔ·Ö±ðÉèÖþ«¶È£¬ÎªÁ˲鿴ÿ¸öÉèÖöԼÆËãÊÕÁ²µÄÓ°Ï죬×öÈç϶ԱÈÊÔÑ飺
Integration accuracy   SCF tolerance     Basis set   Orbital cutoff quality   SCF iterations   Energy (Ha)
Coarse                 Coarse        DN        Coarse        >150       
Coarse                 Coarse        DN        Fine        >150       
Coarse                 Coarse        DNP        Coarse        23        -2996.855992
Coarse                Coarse        DNP        Fine        21        -2996.873912
Fine                   Coarse        DNP        Fine        20        -2996.866641
Coarse                 Fine        DNP        Fine        26        -2996.873911
Fine                    Fine          DNP        Fine        27        -2996.866643

5. ͨ¹ýÉÏÃæµÄ±È½Ï¼ÆË㣬¿ÉÒÔ·¢ÏÖ»ù×éµÄÑ¡ÔñºÜÖØÒª£¬Ö»Òª»ù×éÑ¡ÔñΪDNP£¬ÆäËüÈýÏΪCoarseÒ²ÄܺܿìÊÕÁ²£¬²»¹ýËùµÃÄÜÁ¿Öµ»áÓвî±ð¡£Èç¹ûΪÁË¿ìËÙÓÅ»¯½á¹¹£¬ÕâÈýÏî¿ÉÒÔÏÈÓõ;«¶È£¬´ýµÃµ½×îµÍÄÜÁ¿¹¹Ïóºó£¬ÔÙÌá¸ß¾«¶È¡£

[ Last edited by qiangwxr on 2010-3-16 at 15:35 ]
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