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zyr3365754

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[½»Á÷] ʹÓÃØÍÊÆ»ù×é¾Í²»ÄܼÆËãHOMO-LUMO gap Â𣿣¿

ÓÉÓÚ¼ÆËã×ÊÔ´ÎÊÌ⣬ÎÒ¼ÆËãʱ¶ÔÒøÔ­×ÓʹÓÃÁËLanl2Tz»ù×é¡£²¢ÇÒÌÖÂÛÁËHOMO-LUMO gap.

Éó¸åÈËÒâ¼ûÈçÏ£º I doubt, that the HOMO-LUMO gaps can be tell much about the stability, especially the open shell cases can have significant multi-reference character, which can be not determined with the DFT calculation. From figure 3 I get the impression that they used unrestricted DFT, can they please provide the spin expectation value to judge the quality of these calculations. What do the authors mean with effective core potential for the HOMO-LUMO gap.

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boylc789

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3Â¥2013-06-11 14:16:31
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zyr3365754

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ÒýÓûØÌû:
3Â¥: Originally posted by boylc789 at 2013-06-11 14:16:31
Â¥Ö÷ŪÃ÷°×ÁË£¬ÄÜ·ñ¸æÖªÏ£¬ÎÒ¼ÆËãAgÔ­×Óʱ£¬Ò²ÓõÄlanl2dzØÍÊÆ£¬Ò²ÌÖÂÛÁËhomo-lumo

ÒÔǰÎÒ¼ÆËãµÄ½ðÔ­×Ó£¬Í¬ÑùÓÃµÄØÍÊÆ£¬ÌÖÂÛÁËHOMO-LUMO¶¼·¢Á˺ü¸ÆªÎÄÕÂÁË£¬Ã»ÈË˵ÓÐÎÊÌ⣬ÏÖÔÚÅö¼û¸ö˵ÓÐÎÊÌ⣬ÎҾͲ»ÖªµÀɶÇé¿öÁË¡£
4Â¥2013-06-11 14:28:44
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mzhyan

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5Â¥2013-06-11 15:31:39
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mlanqiang

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6Â¥2013-06-11 15:36:08
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yanrding

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zyr3365754(½ð±Ò+1): лл²ÎÓë
gmy1990: ½ð±Ò+1 2013-06-11 17:27:53
ØÍÊÆÊ±Ëµhomo-lumo¿Ï¶¨Ã»ÎÊÌâ¡£Éó¸åÈËÖ÷ÒªÌá³öÄãµÄÎÊÌâÊÇ¿ª¿Ç²ãÌåϵ¡£

What do the authors mean with effective core potential for the HOMO-LUMO gap. Õâ¾ä»°ÎÒҲûÃ÷°×£¬ÊDz»ÊÇÄãÔ­ÎÄÀïÃæÌáÁËÀàËÆµÄ»°£¿
8Â¥2013-06-11 17:15:26
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jwucn

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zyr3365754: ½ð±Ò+5, ·Ç³£¸ÐлÄúµÄ»Ø´ð 2013-06-13 13:14:59
Éó¸åÈËÓÐ3¸öÎÊÌâ:
1.¶ÔÓÚ¿ª¿Ç²ãÌåϵ(the open shell cases )¼ÆËãµÄ HOMO-LUMO gaps ËûÈÏΪÒâÒå²»´ó.
2.´Óͼ3ËûÈÏΪÄãÃDzÉÓÃÁË·ÇÏÞÖÆÐÔDFTÀíÂÛ(unrestricted DFT), ËùÒÔÒªÄãÃÇÌṩ×ÔÐýÆÚÍûÖµÀ´ÅжϼÆËãµÄ¿É¿¿ÐÔ.
3.Éó¸åÈ˲»Ã÷°×ÄãÃÇËù˵µÄ"effective core potential for the HOMO-LUMO gap" ÊÇʲôÒâ˼£¬ÒªÄãÃǽâÊÍ¡£
15Â¥2013-06-11 23:32:22
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zyr3365754

ľ³æ (ÖøÃûдÊÖ)


ÒýÓûØÌû:
15Â¥: Originally posted by jwucn at 2013-06-11 23:32:22
Éó¸åÈËÓÐ3¸öÎÊÌâ:
1.¶ÔÓÚ¿ª¿Ç²ãÌåϵ(the open shell cases )¼ÆËãµÄ HOMO-LUMO gaps ËûÈÏΪÒâÒå²»´ó.
2.´Óͼ3ËûÈÏΪÄãÃDzÉÓÃÁË·ÇÏÞÖÆÐÔDFTÀíÂÛ(unrestricted DFT), ËùÒÔÒªÄãÃÇÌṩ×ÔÐýÆÚÍûÖµÀ´ÅжϼÆËãµÄ¿É¿¿ÐÔ.
...

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1. What will I really learn new from the ELF data compared to the bond analysis done before, beside that there is the strongest bond between the Si atoms.
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