| 查看: 240 | 回复: 2 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖 | |||
xirainbow木虫 (正式写手)
|
[交流]
【讨论】kpoint shift
|
||
|
今天在pwscf_forum论坛上看到了下面的帖子,给了kpoint shift一些解释。 哪位高人能否给出更多的解释? Question: Dear all In principle ,where the shift of kpoints is important? I mean which information should we loose when we don't use from shift in our kpoint mesh? I read in some references that for supercell calculation in defect studies ,they shifts kpoints from the origin to avoid picking up the gamma point as one of the sampling points). does it mean that symmetry reduces this set to a set of points in the irreducible part of BZ? Answer: You don't loose any information, it's just that a shifted grid makes the calculation converge faster w.r.t the number of kpoints. This is normally only true after applying symmetry operation to reduce the number of kpoints. [ Last edited by xirainbow on 2009-8-22 at 00:13 ] |
» 猜你喜欢
有时候真觉得大城市人没有县城人甚至个体户幸福
已经有3人回复
CSC & MSCA 博洛尼亚大学能源材料课题组博士/博士后招生|MSCA经费充足、排名优
已经有5人回复
酰胺脱乙酰基
已经有8人回复
有70后还继续奋斗在职场上的吗?
已经有6人回复
博士延得我,科研能力直往上蹿
已经有7人回复
退学或坚持读
已经有27人回复
面上基金申报没有其他的参与者成吗
已经有5人回复
遇见不省心的家人很难过
已经有22人回复
xirainbow
木虫 (正式写手)
- 1ST强帖: 2
- 应助: 0 (幼儿园)
- 贵宾: 0.03
- 金币: 2132.6
- 红花: 2
- 帖子: 775
- 在线: 6.1小时
- 虫号: 431211
- 注册: 2007-08-11
- 专业: 光谱学
3楼2010-03-09 13:37:26
2楼2010-03-09 13:17:01













回复此楼