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北京石油化工学院2026年研究生招生接收调剂公告
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zhangliping_77

木虫 (初入文坛)

[求助] 请大家帮我看一下我能带计算结果是否合理

请大家帮我看一下我能带计算结果是否合理?

请大家帮我看一下我能带计算结果是否合理
我的计算结果.jpg


请大家帮我看一下我能带计算结果是否合理-1
文献结果.jpg
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y1ding

铁杆木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
感谢参与,应助指数 +1
zhangliping_77: 金币+50, ★★★★★最佳答案 2015-01-17 19:48:15
ljw4010: 金币+2, 谢谢交流! 2015-01-18 21:07:02
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3楼: Originally posted by zhangliping_77 at 2015-01-16 14:43:53
文献中
The structural and electronic properties  are investigated using the first-principles pseudopotential method as implemented in the ABINIT code. The Brillouin zones are sampled with a 10 × 1  ...

TB-mBJ 和 PBE 结果可以有偏差
但注意Gamma点-2eV的情况
一个打开 一个闭合
其它处可以视为差不多
6楼2015-01-17 17:21:46
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y1ding

铁杆木虫 (著名写手)

至少你得说明你是什么软件,设置什么,
文献又是如何(说不清的,直接给出文献名称)
才能判断合不合理.
2楼2015-01-16 13:48:41
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zhangliping_77

木虫 (初入文坛)

文献中
The structural and electronic properties  are investigated using the first-principles pseudopotential method as implemented in the ABINIT code. The Brillouin zones are sampled with a 10 × 1 × 8 Monkhorst-Pack k mesh. The cutoff energy for the plane-wave expansion is set to be 800 eV. For the structural relaxation, the exchange-correlation energy is in the form of Perdew-Burke-Ernzerhof (PBE) with generalized gradient approximation (GGA). Both the geometries and atomic positions are fully relaxed until the force acting on each atom is less than 0 .5 × 10−3eV/˚A. In the calculations of the electronic structures, the Tran-Blaha modified Becke-Johnson (TB-mBJ) potential [25 ]isused, which can reproduce accurate band gaps for many semi-conductors.
我的计算:
用castep
The Brillouin zones are sampled with a 8 × 2× 5 Monkhorst-Pack k mesh. The cutoff energy for the plane-wave expansion is set to be 180 eV. For the structural relaxation, the exchange-correlation energy is in the form of Perdew-Burke-Ernzerhof (PBE) with generalized gradient approximation (GGA). Both the geometries and atomic positions are fully relaxed until the force acting on each atom is less than 0.03eV/˚A.
3楼2015-01-16 14:43:53
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jpchou

专家顾问 (著名写手)

??????????????
??????????o?? K ?c????????
4楼2015-01-16 17:19:58
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