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有图有真相

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Illusionist(金币+2): 谢谢参与
Illusionist: 取消置顶 2012-07-17 10:19:07
这图好复杂啊……只能默默祝福了
51楼2012-07-17 09:11:49
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klfcumt

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学习了
62楼2012-07-17 09:57:55
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Illusionist

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VOLUME 85, NUMBER 5 PHYSICAL REVIEW LETTERS  2000
Hydrogen as a Cause of Doping in Zinc Oxide


Figure 2 shows that H1 is the lowest energy state over
the entire range of Fermi-level positions within the theo-
retical LDA band gap (indicated with a dotted line in
Fig. 2). We will now argue that H1 remains the lowest en-
ergy state throughout the experimental band gap. Careful
inspection of band structures and wave functions indeed
indicates that hydrogen does not induce any defect level
in the band gap; rather, the lowest conduction bands ac-
quire a certain degree of hydrogen character, indicative of
a hydrogen-induced resonance above the conduction-band
minimum. Electrons placed in this resonance, of course,
relax to the conduction-band minimum, where they can be
bound to the donor in a hydrogenic state [10]. Our analy-
sis indicates that all the relevant conduction-band states
shift upwards when the LDA band gap is adjusted. This
behavior can be deduced from the pressure dependence of
the Kohn-Sham states, as well as from a comparison of
the nlcc calculations with results that explicitly include the
3d electrons [10]. The formation energies of H0
and H2
shown in Fig. 2 were obtained by placing electrons in the
next available unoccupied state—which turns out to be es-
sentially the conduction-bandminimum. When corrections
to the LDA band gap are applied, these formation energies
will therefore increase relative to that of H1. The Fermi-
level position where the formation energies of H1 and H0
are equal (i.e., the donor level) will remain at or above the
conduction-band minimum, and similarly for the acceptor
level.


[ Last edited by Illusionist on 2012-7-17 at 11:02 ]
64楼2012-07-17 10:18:16
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★ ★
小木虫: 金币+0.5, 给个红包,谢谢回帖
uuv2010: 金币+1, 欢迎讨论 2012-08-17 15:41:13
你计算用的公式是??
69楼2012-07-17 21:06:12
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Illusionist

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70楼2012-07-18 08:20:39
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Illusionist

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引用回帖:
69楼: Originally posted by franch at 2012-07-17 21:06:12
你计算用的公式是??

公式跟文章的一样··下面贴出来了··
71楼2012-07-18 08:21:15
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小木虫: 金币+0.5, 给个红包,谢谢回帖
uuv2010: 金币+1, 欢迎讨论 2012-08-17 15:41:23
对比了一下,,很显然,, 你有一个数据和他不一样,,所以曲线出现了平移!
72楼2012-07-18 12:43:24
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引用回帖:
71楼: Originally posted by Illusionist at 2012-07-18 08:21:15
公式跟文章的一样··下面贴出来了··...

对比了一下,,很显然,, 你有一个数据和他不一样,,所以曲线出现了平移!
73楼2012-07-18 12:43:37
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wcj668899

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1.看来需要有意者稍微讲讲
2.文献值和你的值起点相同?
3.方法差距在何处?
74楼2012-07-29 07:37:16
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huangll99

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prl-2000,  这也叫前沿?   不过还是挺有意思的话题,等过两天回学校跟楼主聊聊。。。。。

[ 发自手机版 http://muchong.com/3g ]
75楼2012-07-30 09:26:33
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Illusionist

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引用回帖:
75楼: Originally posted by huangll99 at 2012-07-30 09:26:33
prl-2000,  这也叫前沿?   不过还是挺有意思的话题,等过两天回学校跟楼主聊聊。。。。。

都是Chris G. Van de Walle的一些工作,2000年的是关于ZnO的,2007年发了nature material (H取代O),2008年PRL才是关于SnO2的。谢谢
76楼2012-07-31 16:02:37
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Illusionist

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引用回帖:
73楼: Originally posted by franch at 2012-07-18 12:43:37
对比了一下,,很显然,, 你有一个数据和他不一样,,所以曲线出现了平移!...

假如数据一样,图形不就一样了么··········现在的问题就是Ho呈现0价的时侯形成能算低了。不过现在按照我的理解,文章的之所以高,是因为进行了一个GGA~~GGA+U~~实验值的外推。
77楼2012-07-31 16:05:19
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简单回复
2012-07-17 09:12   回复  
Illusionist(金币+2): 谢谢参与
linovel53楼
2012-07-17 09:16   回复  
Illusionist(金币+2): 谢谢参与
wuge41554楼
2012-07-17 09:18   回复  
Illusionist(金币+2): 谢谢参与
zhoucb55楼
2012-07-17 09:25   回复  
Illusionist(金币+2): 谢谢参与
2012-07-17 09:28   回复  
Illusionist(金币+2): 谢谢参与
祝福
panyunlong57楼
2012-07-17 09:29   回复  
Illusionist(金币+2): 谢谢参与
lizaxuzhu58楼
2012-07-17 09:32   回复  
Illusionist(金币+2): 谢谢参与
2012-07-17 09:43   回复  
Illusionist(金币+2): 谢谢参与
xuzhuliza60楼
2012-07-17 09:43   回复  
Illusionist(金币+2): 谢谢参与
2012-07-17 09:56   回复  
Illusionist(金币+2): 谢谢参与
yanzongwei63楼
2012-07-17 10:12   回复  
Illusionist(金币+2): 谢谢参与
xiaokunfu65楼
2012-07-17 10:32   回复  
Illusionist(金币+2): 谢谢参与
xdkevin66楼
2012-07-17 10:43   回复  
Illusionist(金币+2): 谢谢参与
witake67楼
2012-07-17 11:15   回复  
Illusionist(金币+2): 谢谢参与
2012-07-17 11:19   回复  
Illusionist(金币+2): 谢谢参与
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