[Wien] Units in case.qtldn file

Lukasz Plucinski pluto at physics.ucdavis.edu
Thu May 21 20:13:56 CEST 2009


Hello Xavier,

Thank you for your messages !!

It seems that the problem is more or less solved :)

Lukasz



Rocquefelte wrote:
> Dear Lukasz,
>
> Just a last comment, in the qtl file each band will contain one 
> electron. Then, you can better understand the structure of this file.
>
> N * M * (I + 1) lines with N bands,  described  based on M k-points 
> (i.e. leading to the band dispersion), for I atoms and 1 interstitial 
> region.
>
> With my best regards
>
> Xavier
>
>
>
> Rocquefelte a écrit :
>   
>> Dear Lukasz,
>>
>> To clarify my answer: in your case you have 30 atoms. For a given energy 
>> (0.46323 Ry for example) you will have 30 lines corresponding to the 
>> atomic region of your cell and 1 additional line for the rest 
>> (interstitial region).
>> If you sum up the 31 values contained in the third column you will not 
>> obtain a number of electron but a percentage that should be 100%, for 
>> one given energy (0.46323 Ry for instance), i.e. for one k-point.
>> In other words if you are using 40 k points in your irreducible 
>> brillouin zone, you will have 40 energies in the qtl file and for each 
>> energy you will have 30 lines giving the contribution of each atomic 
>> sphere to this band at this energy (i.e. this k-point) and one 
>> additional line for intertitial contribution to this band at this energy.
>>
>> Regards
>>
>> Xavier
>>
>> Lukasz Plucinski a écrit :
>>   
>>     
>>> Let me provide more info. Below I paste my original mail and small part 
>>> of my case.qtldn. In the data-part the 3rd column is the total charge, 
>>> other columns its just projected on various orbitals. I understand the 
>>> following:
>>>
>>> Sum of 3rd column (in the data part of the case.qtldn) for atoms 1-30 
>>> its a total charge inside the sphere, the number 31 is a charge outside 
>>> the sphere. Sum of 3rd column, for 1-31 gives 1.0000 -- which is simply 
>>> one electron. Thus the numbers in 3rd column are the percentage of the 
>>> electron related to the sphere (atom), k-point, and eigenvalue.
>>>
>>> Am I right ?
>>>
>>> Regards,
>>> Lukasz
>>>
>>>
>>> Fe-slab-001                                                                     
>>>
>>>
>>>  LATTICE CONST.=  5.4169  5.4169108.3380   FERMI ENERGY=   0.34815
>>>  1724 < NMAT < 1859   SPIN=2   NAT= 30      SO 0
>>>  JATOM  1  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  2  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  3  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  4  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  5  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  6  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  7  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  8  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM  9  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 10  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 11  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 12  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 13  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 14  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 15  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 16  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 17  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 18  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 19  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 20  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 21  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 22  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 23  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 24  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 25  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 26  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 27  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 28  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 29  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3  
>>>  JATOM 30  MULT= 1  ISPLIT=-2  tot,0,1,PZ,PX+PY,2,DZ2,DXY,DX2Y2,DXZ+DYZ,3
>>> BAND:    1
>>> ....
>>> ....
>>>    0.46323  1 0.00779    0.00003 0.00001 0.00000 0.00000 0.00768 0.00133 
>>> 0.00546 0.00000 0.00089 0.00003
>>>    0.46323  2 0.05701    0.00051 0.00003 0.00002 0.00001 0.05632 0.05604 
>>> 0.00019 0.00000 0.00009 0.00008
>>>    0.46323  3 0.03604    0.00002 0.00000 0.00000 0.00000 0.03578 0.00406 
>>> 0.03171 0.00000 0.00001 0.00008
>>>    0.46323  4 0.07950    0.00043 0.00004 0.00002 0.00002 0.07888 0.07809 
>>> 0.00063 0.00000 0.00016 0.00009
>>>    0.46323  5 0.00689    0.00000 0.00001 0.00001 0.00000 0.00678 0.00035 
>>> 0.00478 0.00000 0.00165 0.00003
>>>    0.46323  6 0.00857    0.00003 0.00004 0.00004 0.00000 0.00837 0.00555 
>>> 0.00252 0.00000 0.00030 0.00010
>>>    0.46323  7 0.02944    0.00005 0.00001 0.00000 0.00001 0.02925 0.01372 
>>> 0.01516 0.00000 0.00036 0.00005
>>>    0.46323  8 0.07609    0.00028 0.00001 0.00000 0.00001 0.07571 0.07410 
>>> 0.00125 0.00000 0.00036 0.00005
>>>    0.46323  9 0.00884    0.00001 0.00002 0.00002 0.00000 0.00870 0.00202 
>>> 0.00548 0.00000 0.00120 0.00004
>>>    0.46323 10 0.00846    0.00001 0.00004 0.00004 0.00000 0.00826 0.00269 
>>> 0.00513 0.00000 0.00043 0.00010
>>>    0.46323 11 0.03792    0.00011 0.00000 0.00000 0.00000 0.03768 0.02541 
>>> 0.01196 0.00000 0.00030 0.00005
>>>    0.46323 12 0.06477    0.00026 0.00001 0.00000 0.00001 0.06440 0.06168 
>>> 0.00228 0.00000 0.00044 0.00005
>>>    0.46323 13 0.01027    0.00001 0.00003 0.00003 0.00000 0.01010 0.00216 
>>> 0.00700 0.00000 0.00094 0.00006
>>>    0.46323 14 0.00891    0.00000 0.00003 0.00003 0.00000 0.00873 0.00000 
>>> 0.00814 0.00000 0.00059 0.00008
>>>    0.46323 15 0.05344    0.00020 0.00001 0.00000 0.00001 0.05312 0.04664 
>>> 0.00611 0.00000 0.00036 0.00005
>>>    0.46323 16 0.04853    0.00017 0.00001 0.00000 0.00001 0.04824 0.04151 
>>> 0.00627 0.00000 0.00047 0.00005
>>>    0.46323 17 0.00661    0.00000 0.00003 0.00003 0.00000 0.00643 0.00005 
>>> 0.00570 0.00000 0.00067 0.00008
>>>    0.46323 18 0.00933    0.00000 0.00002 0.00002 0.00000 0.00917 0.00031 
>>> 0.00796 0.00000 0.00090 0.00006
>>>    0.46323 19 0.06886    0.00025 0.00001 0.00000 0.00001 0.06849 0.06475 
>>> 0.00345 0.00000 0.00030 0.00005
>>>    0.46323 20 0.03695    0.00011 0.00001 0.00000 0.00001 0.03671 0.02609 
>>> 0.01017 0.00000 0.00046 0.00005
>>>    0.46323 21 0.00528    0.00000 0.00004 0.00004 0.00000 0.00509 0.00044 
>>> 0.00411 0.00000 0.00054 0.00010
>>>    0.46323 22 0.00945    0.00000 0.00002 0.00002 0.00000 0.00931 0.00053 
>>> 0.00768 0.00000 0.00110 0.00004
>>>    0.46323 23 0.08013    0.00033 0.00001 0.00000 0.00001 0.07968 0.07771 
>>> 0.00172 0.00000 0.00025 0.00006
>>>    0.46323 24 0.02956    0.00006 0.00000 0.00000 0.00000 0.02935 0.01291 
>>> 0.01606 0.00000 0.00039 0.00005
>>>    0.46323 25 0.00874    0.00003 0.00004 0.00004 0.00000 0.00852 0.00614 
>>> 0.00204 0.00000 0.00034 0.00010
>>>    0.46323 26 0.00588    0.00000 0.00001 0.00001 0.00000 0.00577 0.00008 
>>> 0.00412 0.00000 0.00158 0.00003
>>>    0.46323 27 0.07355    0.00041 0.00003 0.00002 0.00001 0.07296 0.07184 
>>> 0.00094 0.00000 0.00018 0.00009
>>>    0.46323 28 0.03548    0.00002 0.00000 0.00000 0.00000 0.03522 0.00492 
>>> 0.03029 0.00000 0.00001 0.00008
>>>    0.46323 29 0.05791    0.00051 0.00002 0.00002 0.00000 0.05723 0.05690 
>>> 0.00024 0.00000 0.00008 0.00008
>>>    0.46323 30 0.00825    0.00002 0.00000 0.00000 0.00000 0.00814 0.00158 
>>> 0.00553 0.00000 0.00104 0.00003
>>>    0.46323 31 0.02156
>>> ....
>>> ....
>>>
>>> Lukasz Plucinski wrote:
>>>   
>>>     
>>>       
>>>> Hello,
>>>>
>>>> I did spin-polarized Fe(100) slab calculation to get minority surface 
>>>> states. I wrote a script to read case.qtldn and case.outputirdn to 
>>>> plot only bands of the certain symmetry (because photoemission in my 
>>>> geometry can only see even states). To see surface states nicely I 
>>>> plot only these which have more than 0.2 total charge in case.qtldn 
>>>> file (atom and k-resolved). Of course this "0.2" is an arbitrary 
>>>> number, but for my particular case it produces nice and clear picture.
>>>>
>>>> My question is trivial, and most likely it has been answered many 
>>>> times before:
>>>>
>>>> What are the units of this "0.2" number ? What are the units in the 
>>>> case.qtldn file ?
>>>>
>>>> Lukasz
>>>>
>>>>     
>>>>       
>>>>         
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>>>     
>>>       
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>>     
>
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