使用的軟件:VASP, Origin, SshClient, p4vasp
The LDOS, or local density of states, is the the density of state at a particular site of a crystal with some asymetry. For example: A slab will have a different band structure on the surface than in the bulk region.
The PDOS is a projected density of states. In the context of VASP this means site-projected DOS, where the information about the different contributions of the different orbitals is computed. You then know which states (spd) contribute at which energy. You have to select the proper LORBIT tag in the INCAR file (e.g. LORBIT=11) to get the spd decomposed DOSCAR file output. The formatting is explained in the DOSCAR file link provided.
一 PDOS 計算
在完成結(jié)構(gòu)優(yōu)化和靜態(tài)計算后衰絮,拷貝 scf 文件夾為 pdos
cp -rf scf pdos
編輯 pdos 文件夾下 INCAR
INCAR
SYSTEM=x
ISTART=1 # change
ICHARG=11 # add
LORBIT=11 # add
ENCUT=350
EDIFF=1E-5
IBRION=2
POTIM=0.25
NSW=0
EDIFFG=-1E-2
ISMEAR=0
SIGMA=0.05
PREC=ACCURATE
ISIF=2
NPAR=4
#LWAVE=FALSE
#LCHARG=FALSE
LREAL=Auto
#IALGO=48
ISYM=0
提交作業(yè)厨钻,計算完成后爆袍,使用 SshClient 將 vasprun.xml 導(dǎo)入本地電腦,使用可視化軟件 p4vasp 處理践宴。
二 P4vasp 的使用
1. 安裝 Installation
從官方主頁 (http://www.p4vasp.at) 下載 win 版本軟件,解壓后運行 p4v.exe, 圖形界面如下
2. PDOS 處理
- 導(dǎo)入 vasprun.xml 文件爷怀,文件路徑不能有中文字符阻肩。
- Electronic - Local Dos+bands control, 可選擇原子和軌道進(jìn)行可視化處理。
- Graph - Export, 若使用 origin 處理數(shù)據(jù)运授,導(dǎo)出添加后綴名
.dat
烤惊。 - Origin 處理。