24小时热门版块排行榜    

Znn3bq.jpeg
汕头大学海洋科学接受调剂
查看: 5230  |  回复: 18
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

[交流] 【求助】band structures using hybrid functionals 的Kpoints问题

http://cms.mpi.univie.ac.at/vasp-forum/forum_viewtopic.php?4.6633.10
band structures using hybrid functionals have to be calculated the following way:
-) First perform a selfconsistent Hartree-Fock/HSE calculation using a conventional KPOINTS file.
-) Copy the IBZKPT file to KPOINTS, and explicitely add all desired k-points along high-symmetry lines of the BZ that are needed for the bandstructure plot. Add the points at the end of the KPOINTS file, but set the weights of these added k-points to 0.
-) Do not forget to set the number of k-points in KPOINTS correctly (to the number of the k-points used in the standard mesh PLUS the number of the k-points along the lines), such that all k-points are used for the calculations.
-) NKRED can not be used.
-) Perform a second VASP run:
It is recommended to use the Davidson algorithm, since it converges that eigen energies at the new k-points fastest. Since VASP terminates when the total energy is converged to a certain threshold, it is important to force VASP to do a minimum number of steps, so that the orbitals at the new k-points are fully converged (note: since their weight is zero, they do not contribute to the total energy).
This can be done using e.g.

ALGO = N ; NELMIN = 5 ! Davidson, minimum 5 scf-steps
IBRION = 1 ! Use simple charge mixer, since
Pulay might blow up

-) The KS-eigenvalues of the states along the high-symmetry lines are written in OUTCAR, EIGENVAL, vasprun.xml; please cut the k-points required for the bandstructure from one of these files and proceed as usual (using p4vasp or any other graphics tool you usually use to produce bandstructure-plots)

Note: A Hartee-Fock calculation can NOT be continued from an existing CHGCAR file, since the non-local exchange is not determined by the charge density but by the density matrix and/or the KS-orbitals.


以上是官方给出的解释。


我的问题是:
1、-) Copy the IBZKPT file to KPOINTS, and explicitely add all desired k-points along high-symmetry lines of the BZ that are needed for the bandstructure plot. Add the points at the end of the KPOINTS file, but set the weights of these added k-points to 0.
按照这样的方法产生的Kpoints运行后提示Kpoints错误,不能读取。
2、这一句不知所云:(to the number of the k-points used in the standard mesh PLUS the number of the k-points along the lines), 没有理解怎么回事?



请问谁用hse的方法计算过能带结构,请show一下下你的Kpoints。
谢谢。

[ Last edited by wuli8 on 2010-12-1 at 21:04 ]
回复此楼

» 收录本帖的淘帖专辑推荐

VASP 第一性原理相关文档 表界面计算 vasp光学
杂化泛函方面的研究 VASP相关 VASP报错建模问题集

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

» 抢金币啦!回帖就可以得到:

查看全部散金贴

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

282926214

金虫 (小有名气)


引用回帖:
Originally posted by vimtex at 2010-12-02 00:00:21:
show your KPOINTS instead.

IBZKPT
是单机产生的?
3楼2010-12-02 08:37:51
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 19 个回答

vimtex

银虫 (初入文坛)


show your KPOINTS instead.
2楼2010-12-02 00:00:21
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jghe

金虫 (著名写手)


★ ★
zzy870720z(金币+2):谢谢指教 2010-12-04 21:36:29
wuli8(金币+100):感谢。我再试一试 2010-12-04 22:51:40
Automatically generated mesh
      57
Reciprocal lattice
  0.000000  0.000000  0.000000      1.000000
  0.333333  0.000000  0.000000      1.000000
-0.333333  0.000000  0.000000      1.000000
  0.000000  0.333333  0.000000      1.000000
  0.333333  0.333333  0.000000      1.000000
-0.333333  0.333333  0.000000      1.000000
  0.000000 -0.333333  0.000000      1.000000
  0.333333 -0.333333  0.000000      1.000000
-0.333333 -0.333333  0.000000      1.000000
  0.000000  0.000000  0.333333      1.000000
  0.333333  0.000000  0.333333      1.000000
-0.333333  0.000000  0.333333      1.000000
  0.000000  0.333333  0.333333      1.000000
  0.333333  0.333333  0.333333      1.000000
-0.333333  0.333333  0.333333      1.000000
  0.000000 -0.333333  0.333333      1.000000
  0.333333 -0.333333  0.333333      1.000000
-0.333333 -0.333333  0.333333      1.000000
  0.000000  0.000000 -0.333333      1.000000
  0.333333  0.000000 -0.333333      1.000000
-0.333333  0.000000 -0.333333      1.000000
  0.000000  0.333333 -0.333333      1.000000
  0.333333  0.333333 -0.333333      1.000000
-0.333333  0.333333 -0.333333      1.000000
  0.000000 -0.333333 -0.333333      1.000000
  0.333333 -0.333333 -0.333333      1.000000
-0.333333 -0.333333 -0.333333      1.000000  
  0.00000000  0.00000000  0.50000000       0
  0.00000000  0.00000000  0.44444444       0
  0.00000000  0.00000000  0.38888889       0
  0.00000000  0.00000000  0.33333333       0
  0.00000000  0.00000000  0.27777778       0
  0.00000000  0.00000000  0.22222222       0
  0.00000000  0.00000000  0.16666667       0
  0.00000000  0.00000000  0.11111111       0
  0.00000000  0.00000000  0.05555556       0
  0.00000000  0.00000000  0.00000000       0
  0.00000000  0.00000000  0.00000000       0
  0.05555556  0.05555556  0.00000000       0
  0.11111111  0.11111111  0.00000000       0
  0.16666667  0.16666667  0.00000000       0
  0.22222222  0.22222222  0.00000000       0
  0.27777778  0.27777778  0.00000000       0
  0.33333333  0.33333333  0.00000000       0
  0.38888889  0.38888889  0.00000000       0
  0.44444444  0.44444444  0.00000000       0
  0.50000000  0.50000000  0.00000000       0
  0.50000000  0.50000000  0.00000000       0
  0.50000000  0.50000000  0.05555556       0
  0.50000000  0.50000000  0.11111111       0
  0.50000000  0.50000000  0.16666667       0
  0.50000000  0.50000000  0.22222222       0
  0.50000000  0.50000000  0.27777778       0
  0.50000000  0.50000000  0.33333333       0
  0.50000000  0.50000000  0.38888889       0
  0.50000000  0.50000000  0.44444444       0
  0.50000000  0.50000000  0.50000000       0

例子,上半部分是Monkhorst Pack产生的K点,下面是高对称的K点,第二行总K点的数目是两部分的总和,画能带的时候只取下面高对称部分的本征值即可
4楼2010-12-04 21:15:41
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
我算的时候还是有提示K点设置有问题
5楼2011-03-11 00:08:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 各位老师好,求调剂,本科211,一志愿天津大学生物与医药学硕,差两名录取。 +11 路六六jjj 2026-04-13 11/550 2026-04-14 16:01 by zs92450
[考研] 071000生物学调剂求助 +18 zzzzwww 2026-04-09 21/1050 2026-04-14 15:39 by zs92450
[基金申请] RY:中国产出的科学垃圾论文,绝对数量和比例都世界第一 +6 zju2000 2026-04-14 17/850 2026-04-14 14:34 by jurkat.1640
[考研] 300分求调剂 (085501机械专硕,本科扬大) +9 xu@841019 2026-04-11 10/500 2026-04-14 08:48 by 木木mumu~
[考研] 332求调剂 +15 蕉蕉123 2026-04-10 15/750 2026-04-13 23:12 by pies112
[基金申请] 有爆料,一个青年教师卖房得400万,然后换了一个四青帽子 +11 babu2015 2026-04-08 11/550 2026-04-13 16:33 by probebill
[考研] 一志愿0807 数一英一 313 有没有二轮调剂 +12 emokidd 2026-04-08 13/650 2026-04-13 08:32 by lhj2009
[考研] +10 李多米lee. 2026-04-12 11/550 2026-04-12 22:58 by yuyin1233
[考研] 322求调剂 +6 123安康 2026-04-12 13/650 2026-04-12 15:51 by 123安康
[考研] 调剂 +10 只叙离别辞 2026-04-09 12/600 2026-04-11 20:57 by 逆水乘风
[考研] 085501机械专硕 302分 不挑专业求调剂 +7 汪某. 2026-04-09 7/350 2026-04-11 14:37 by luhong1990
[考研] 0859,337求调剂 +4 研s. 2026-04-10 4/200 2026-04-11 11:34 by caotw2020
[考研] 085402通信工程调剂,有4项学科竞赛国奖(电赛国二),硕士研究生调剂自荐信。 +5 m永o不v言o弃m 2026-04-09 5/250 2026-04-11 09:33 by zhq0425
[考研] 本科211 工科085400 280分求调剂 可跨专业 +11 LZH(等待调剂中 2026-04-10 11/550 2026-04-11 08:39 by zhq0425
[考研] 计算机类求调剂,22408-274分 +7 上岸de小虫 2026-04-09 8/400 2026-04-10 19:56 by fxue1114
[考研] 265求调剂 +12 风说她早忘了 2026-04-10 13/650 2026-04-10 18:56 by chemisry
[考研] 314求调剂 +18 xhhdjdjsjks 2026-04-09 19/950 2026-04-10 18:53 by HPUCZ
[考研] 调剂申请086000一志愿西北农林科技大学生物与医药320分-本科齐鲁工业大学 +3 美美女士 2026-04-09 3/150 2026-04-10 10:31 by liuhuiying09
[考博] 博士自荐 +7 可可小胖 2026-04-08 7/350 2026-04-10 08:28 by kimhero
[考研] 314求调剂 +14 weltZeng 2026-04-09 14/700 2026-04-09 23:14 by wolf97
信息提示
请填处理意见