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wang-lf09

木虫 (小有名气)

[求助] 石墨烯中碳原子态密度求分析,万分感谢! 已有3人参与

我计算了单层石墨烯的态密度,同时还计算了单层石墨烯和单层MoS2组成的层状体系的态密度。选择相同的碳原子,比较态密度的变化,如下图所示,红色线表示的单层石墨烯中碳原子的态密度,蓝色线表示的是层状体系中碳原子的态密度,二者在fermi能级以上的区域分布有很大差别,这能说明什么呢?在fermi能级以下区域,二者也有一些区别,但如何分析呢,能得到什么样的结论呢?请朋友们帮帮忙,非常感谢!
之前也发过帖子,求帮助通过分析态密度来分析单层石墨烯和单层MoS2组成的层状体系中石墨烯层与MoS2层之间的相互作用,但问题依然没解决。想烦请知道的朋友从这个方向来分析,分析层间到底具有怎样的相互作用或相互影响关系。谢谢!

石墨烯中碳原子态密度求分析,万分感谢!
dos2.jpg
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jpchou

专家顾问 (著名写手)

★ ★ ★ ★ ★ ★
wang-lf09(fzx2008代发): 金币+3, 谢谢指导 2014-07-17 08:16:23
franch: 金币+3, 谢谢回帖交流。。。 2014-07-29 13:22:15
???????:
7?: Originally posted by wang-lf09 at 2014-07-16 22:17:20
????лл?????????
??????????????????????????????????????????????????????????????????????????????????????????????????(????????????)???????????????????????????? ...

"???????????????????????????????????(????????????)?????????????????????????????????????????????????????????????"
??..... С??????...??????....???????f....???

???B??????
??????A(?????f orbital ???? band) ???????????)
???? Pauli Exclusion Principle
?? Fermi level ????
?????????~??Y???????????H????????????????~?????????????
??~
?? fermi level ?????????@??
fermi level ?????]???????
????? band ???? vacuum state ???e?? (???????????)
?О????????c??????
????
fermi level ????????????????????
DFT ?? base on ground state calculation
fermi ?????|?? (DOS or band structure)
??????λ??????????? (??λ??)
????
?Y?
fermi level ????? DOS
????e????????
?ǖ|???]??????r?????
8楼2014-07-16 23:49:03
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jpchou

专家顾问 (著名写手)

【答案】应助回帖

★ ★
感谢参与,应助指数 +1
fzx2008: 金币+2, 谢谢指导 2014-07-17 08:15:41
Fermi ???υ^?????
???μ????????????????? band ??????
?K????? "?к????e"
?? NBANDS ???~???????????Y??

?P????
???X??????ц??w????? DOS ??????
?K??? sigma ?{С (?@????? peak ??????)
?????k???^??????????
2楼2014-07-16 16:20:37
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wang-lf09

木虫 (小有名气)

???????:
2?: Originally posted by jpchou at 2014-07-16 16:20:37
Fermi ???υ^?????
???μ????????????????? band ??????
?K????? "?к????e"
?? NBANDS ???~???????????Y??

?P????
???X??????ц??w????? DOS ??????
?K??? sigma ...

лл????
???????INCAR??????NBANDS??????????????Fermi?????????????????
????л??????????????DOS????sigma??????С??????????????????0.1???????????лл??
3楼2014-07-16 17:33:16
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飞行鸟

至尊木虫 (文坛精英)

【答案】应助回帖

★
感谢参与,应助指数 +1
fzx2008: 金币+1, 谢谢回帖! 2014-07-17 08:15:51
-2到+2几乎没区别的啊
快乐吧
4楼2014-07-16 18:37:31
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