[Wien] Question about large RKmax

2017-09-14 Thread Kyohn Ahn
Dear WIEN2k users

I'm sorry.
In the last mail, the link was broken,,

I have a problem about large RKmax.
Please see the attached file:
There are some parts of bandstructure of my system
with various RKmax values.

In my case only a large RKmax (11~12) shows good results.
Is there anyone who had similar experiences?

# Details:
# The smallest Rmt = 2.5 (atomic distances are pretty long) /
# Heavy elements from Os to Bi line /

My biggest concern, really, is that
whether the results are in the "numerical linear dependency" problem
or not. Is there any other method to check the issue?

Thank you for reading this email.
Any response in this regard will be very helpful for me.

With best regards

- Kyohn
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[Wien] Question about large RKmax

2017-09-13 Thread Kyohn Ahn
Dear WIEN2k users,

I have a problem about large RKmax.

Please see the below png file:
http://blogattach.naver.com/32a72e9d8cd5d60a25c0a493ab4a384febbe47a512/20170914_54_blogfile/butz1004_1505360157025_cOW3qT_png/rkm.png?type=attachment

There are some parts of bandstructure of my system
with various RKmax values.

In my case only a large RKmax (11~12) shows good results.
It there anyone who had similar experiences?

# Details:
# The smallest Rmt = 2.5 (atomic distances are pretty long) /
# Heavy elements from Os to Bi line /
# The total E converges as RKmax increase /

My biggest concern, really, is that
whether the results are in the "numerical linear dependency" problem
or not. Is there any other method to check the issue?

Thank you for reading this email.
Any response in this regard will be very helpful for me.

With best regards

- Kyohn
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Re: [Wien] Question about mBJ+eece

2016-09-30 Thread Kyohn Ahn
Dear prof. Peter Blaha

Yes. What I encountered is the gap problem :)

In my case only mBJ+SO+EECE reproduced the metal to insulator transition,
while the other methods failed.
However the energy gap is pretty large, against my expectation.
That's why I suspect an overestimation of the correlation effects.

I appreciate your useful advice,
and will try [mBJ+SO+EECE]→[mBJ+SO].

Have a happy weekend.!♧

- Kyohoon
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Re: [Wien] WARNING with eece (EF not accurate)

2016-09-30 Thread Kyohn Ahn
Also I thank you again for the new runeece_lapw.
It works fine! :)

- Kyohoon
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Re: [Wien] Question about mBJ+eece

2016-09-30 Thread Kyohn Ahn
Dear prof. Peter Blaha

Unfortunately, my case is a 5d system ...

I should consider my results carefully
and try other methods.

Thank you very much for your advice.
It is really helpful for me :)

- Kyohoon
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[Wien] Question about mBJ+eece

2016-09-29 Thread Kyohn Ahn
Dear WIEN2k users

Can mBJ+eece show a reasonable result? i.e.,
Is there any possibility of overestimation
on the strong correlation effects?

Recently, I god some results of
mBJ+SO & GGA+SO+eece & mBJ+SO+eece
, but only mBJ+SO+eece showed an expected result.

Thank you in advance for any helpful advice.
Have a nice day.!

- Kyohoon
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Re: [Wien] WARNING with eece (EF not accurate)

2016-09-29 Thread Kyohn Ahn
Dear prof. Peter Blaha

Thank you very much for your quick response.!
I checked the inputs:



### case.in2c ###

TOT (TOT,FOR,QTL,EFG,FERMI)
  -12.80  115.00   0.50 0.05  1   EMIN, NE, ESEPERMIN, ESEPER0, iqtls
TETRA0.000  (GAUSS,ROOT,TEMP,TETRA,ALL  eval)
  0 0  2 0 -3 2  4 0  4 4 -5 2  6 0  6 4
  0 0  2 0  4 0  4 4  6 0  6 4
  0 0  2 0  4 0  4 4  6 0  6 4
  0 0  1 0  2 0  2 2  3 0  3 2  4 0  4 2  4 4  5 0  5 2  5 4  6 0  6 2  6 4
 6 6
  0 0  1 0  2 0  3 0  4 0  4 4  5 0  5 4  6 0  6 4
 12.00  GMAX
NOFILEFILE/NOFILE  write recprlist



### case.in2ceece ###

TOT  EECE (TOT,FOR,QTL,EFG,FERMI)
-12.80 15.00 0.50 0.05 1 EMIN, NE, ESEPERMIN, ESEPER0, iqtls
TETRA0.000  (GAUSS,ROOT,TEMP,TETRA,ALL  eval)
1
3 1 2
  0 0  2 0 -3 2  4 0  4 4 -5 2  6 0  6 4
  0 0  2 0  4 0  4 4  6 0  6 4
  0 0  2 0  4 0  4 4  6 0  6 4
  0 0  1 0  2 0  2 2  3 0  3 2  4 0  4 2  4 4  5 0  5 2  5 4  6 0  6 2  6 4
 6 6
  0 0  1 0  2 0  3 0  4 0  4 4  5 0  5 4  6 0  6 4
 12.00  GMAX
NOFILEFILE/NOFILE  write recprlist



Does runeece_lapw have a small bug ..?
(wrong NE value)

I made some change
to write the correct value of NE (15 → 115),
then the problem disappeared.



Thank you again for your help :)
Have a nice day♧

- Kyohoon
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[Wien] WARNING with eece (EF not accurate)

2016-09-29 Thread Kyohn Ahn
Dear WIEN2k users

In my [runsp_lapw -so -eece] run,
[x lapw2 -eece] shows a strange work.

x lapw0 -p
x lapw1 -up -p
x lapw1 -dn -p
x lapwso -up -orb -p
x lapw2 -up -p -c -so
x lapw2 -dn -p -c -so
x lcore -up
x lcore -dn
x lapwdm -up -p -so -c
x lapw2 -c -up -so -p -eece
x lapw2 -c -dn -so -p -eece
x lapw0 -p -eece
x orb -up -p
x orb -dn -p
x mixer -eece -orb

In the first call of lapw2 (without -eece)
there is no problem.

However in the second call of lapw2 (with -eece),
the code warns me for the integration.
* WARNING: EF not accurate, new emin,emax,NE-min,NE-max
* not only once, but "every" cycle

It there anyone who had similar experiences?



My system is a cubic perovskite (transition-metal oxide)
with ferromagnetic insulating phase.

* I tried both of [TETRA] and [TEMP 0.005].
TETRA shows above problem, but describe well the insulating state.
TEMP does not show the EF problem, but I could not get the insulating
solution with TEMP.

* Also I tried with a high k-mesh (32x32x32),
but the problem still appeared.



Thank you for reading this email.
Any response in this regard will be very helpful for me.

With best regards

- Kyohoon
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[Wien] Some questions about spin-orbit treatment

2015-10-02 Thread Kyohn Ahn
Dear WIEN2k users

Hi. I am studying some materials
which have strong spin-orbit coupling (SOC) effects.

What I want to do is
a modeling with simple SOC form, such as
H_so → ξvec[L]·vec[S].

I read some lecture notes, and noticed that
WIEN2k works with Dirac relativistic treatment in LAPWSO.

Question1)
Can LAPWSO print out vec[L] (i.e., with three components) for each k-point?

==

I also realized that one can get vec[L] for each k-point from LAPWDM (with
some modification of the code).

Question2)
With 「vec[L] & vec[S] from LAPWDM」 and 「ξ from LAPWSO」,
is it possible to make a model, H_so → ξvec[L]·vec[S]?

==

Any comment will be very helpful for me.
Thank you for reading this e-mail,
and have a nice day.

- Kyohn
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Re: [Wien] wien2wannier interface

2015-03-17 Thread Kyohn Ahn
Hi, Elias.

Maybe I can share my experiences.
I'm a user of v0.96.

The problem occurs when _ exists in the filename.
More specifically, the trouble appears when I tried to get Wannier plots.
I think that the key is in either [prepare_plots.sh] or [xsfAll.sh].
(I could not find any problem with other operations, such as write_w2win,
write_win, w2w, ..., etc.)

My filename was, for example, [SrVO3_super.~~~].
Then the outputs (~xsf files, etc,) were strange.

I deleted _ in the name of input files,
i.e., [SrVO3_super.~~~] → [SrVO3super.~~~].
Then the problem disappeared.

Have a nice day.!

- Kyohn
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Re: [Wien] wien2wannier interface

2015-03-11 Thread Kyohn Ahn
Hi, Mondal.

Could you try to delete _ in the name of your files?
for example..,
[abc_qwe.vector] → [abcqwe.vector]

I had a similar experience to you (for old version of w2wan).

Have a nice day.!

- Kyohn
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[Wien] Coefficients in SOC calculations

2013-11-13 Thread Kyohn Ahn
Dear WIEN2k users,

I hope to obtain the coefficients for eigenvectors in case of including
spin-orbit coupling,
and have read below comments.
# http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg01780.html
# http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg07304.html

In LAPW1, I checked that
Z(NV,NE) (or ZLOCAL) in wfpnt.F has the informations
and will be printed out like below. (with the option WFPRI)

   RECIPROCAL LATTICE VECTORS

1.ENERGY   2.ENERGY   3.ENERGY   4.ENERGY   5.ENERGY
6.ENERGY ...
  -2   0   0
   0.275695   0.258192   0.00   0.102118  -0.499471
 -0.566221 ...
   0   0   0
   0.275695  -0.258192   0.00   0.102118  -0.499471
0.566221 ...
  -1  -1  -1
   0.259429   0.00   0.239793  -0.156834   0.421004
0.00 ...
  -1  -1   1
   0.259429   0.00  -0.239793  -0.156834   0.421004
0.00 ...

i.e.,
Z(1,1) Z(1,2) Z(1,3) Z(1,4) ...
Z(2,1) Z(2,2) Z(2,3) Z(2,4) ...
Z(3,1) Z(3,2) Z(3,3) Z(3,4) ...
...



Q) I found the array vect(@,#,spin) in LAPWSO, and expect it replaces the
role of Z.
So I think that to get the coefficients, one should print it like
vect(1,1,1) vect(1,2,1) vect(1,3,1) vect(1,4,1) ...
vect(2,1,1) vect(2,2,1) vect(2,3,1) vect(2,4,1) ...
vect(3,1,1) vect(3,2,1) vect(3,3,1) vect(3,4,1) ...
...
Is the process OK..?
If not, is there any extra treatment for vect..?



Thank you for reading this mail.
Any comment will be very helpful for me.

Have a nice day!

Kyohn
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[Wien] Occupation matrix in SOC calculations

2013-09-23 Thread Kyohn Ahn
Dear WIEN2k users,

I would like to print an occupation matrix in the |j, m_j basis (instead
of |l, m_l for each spin)
in an LDA+U+SOC calculation.
Could you give me comments?

With best regards

- Kyohn
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Re: [Wien] Occupation matrix in SOC calculations

2013-09-23 Thread Kyohn Ahn
Dear Prof. Blaha,

Thank you very much for the response!
It is very helpful for me. : )

Best regards,

- Kyohn
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Re: [Wien] Wien2Wannier with spin-orbit coupling

2013-09-04 Thread Kyohn Ahn
Dear Elias,

I'm really sorry for my late response,
and appreciate your fruitful report (about ifort+ATLAS).

My problem was solved:
It was just the problem of reading lapw2 -c in dayfile.
(and also I'm thankful for the discussion,
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2013-August/019639.html)



==



At present, my trouble is that how to treat the real and imaginary part of
Wannier functions (FWs).
(especially, in case of including spin-orbit coupling)

I think that either or both of the up and down WFs can (should?) be complex.
(For example, Fig. 4. in Comp. Phys. Commun. 181, 1888 (2010))

Q) Could anyone give me some comments for treating the real/imaginary of
WFs?
Par exemple,
[1] Do I need to touch up the source code to separate them in outputs?
[2] or I have to do special handle the basis WF orbits in w2win files?
[3] or they have already been separately in outputs? (in each xsf files)

If [3] is the right way, I have another question.
Q) There should be twelve xsf files for SrVO3 (incl SO): Does which file
have which part of real/imaginary?
case_1.xsfup ┐
case_2.xsfup ┤ⓐ
case_3.xsfup ┘
case_4.xsfup ┐
case_5.xsfup ┤ⓑ
case_6.xsfup ┘
case_1.xsfdn ┐
case_2.xsfdn ┤ⓒ
case_3.xsfdn ┘
case_4.xsfdn ┐
case_5.xsfdn ┤ⓓ
case_6.xsfdn ┘



==



Here are my additional questions:
To reproduce the example of Sr2IrO4 in Comp. Phys. Commun. 181, 1888 (2010),
I tried to construct the WFs by eq. 14.

Q) Could you check whether the below information is right..?
= .w2winup =
BOTH
  73  74 # min band Nmin, max band Nmax
  3  2   # LJMAX max in exp(ibr) expansion, #Wannier functions
1 # d-xz + id-yz orbital, i.e., Y(2,1)
 2 2  1   1.   0.   # index of atom, L, M, coefficient
(complex)
2 # d-xy orbital, i.e., Y(2,-2) - Y(2,2)
 2 2 -2   0.   0.70710677   # index of atom, L, M, coefficient
(complex)
 2 2  2   0.  -0.70710677   # index of atom, L, M, coefficient
(complex)
=.w2windn =
BOTH
  73  74 # min band Nmin, max band Nmax
  3  2   # LJMAX max in exp(ibr) expansion, #Wannier functions
2 #d-xy orbital, i.e., Y(2,-2) - Y(2,2)
 2 2 -2   0.   0.70710677   # index of atom, L, M, coefficient
(complex)
 2 2  2   0.  -0.70710677   # index of atom, L, M, coefficient
(complex)
1 #d-xz - id-yz orbital, i.e., Y(2,-1)
 2 2 -1   1.   0.   # index of atom, L, M, coefficient
(complex)

If they are right, I will get the four xsf files.
case_1.xsfup.gz
case_2.xsfup.gz
case_1.xsfdn.gz
caxe_2.xsfdn.gz

Q) Does which file have which part of real/imaginary?



Thank you for giving me your time and consideration.

With best regards

Kyohn
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[Wien] Wien2Wannier with spin-orbit coupling

2013-07-30 Thread Kyohn Ahn
Dear WIEN2k users,

Can I ask you some questions about Wien2Wannier calculation with spin-orbit
coupling (SO)?

I have checked the examples in /w2w_install_dir/templates/, then I found
that
the Wannier function plots for spin-polarized case (testcase2) and
spin-polarized with SO case (testcase3) are quite different.

There are two questions I have:

1. The meaning of SO in Wannier function plots:
The SO effects are not essential to SrVO3 in examples.
However, the two plots (testcase2 and testcase3) look very different.
So I wonder how SO effects make the differences.

2. The meaning of up/down in spin-polarized with SO case:
The data of spin-up and down should be mixed during w2w calculations,
but the xsf files are written respectively for up and down.

So I think that in spin-polarized with SO case (testcase3), for example
SrVO3_1.xsfup.gz is for real-part and SrVO3_1.xsfdn.gz is for imaginary
part ...
Is this true?

Thank you for reading this mail.
Any response in this regard will be very helpful for me.

With best regards

Kyohn
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[Wien] Some questions about wavefunctions (2)

2012-09-10 Thread Kyohn Ahn
Thank you very much for your nice comment, Blaha and Gavin :)

Can I have some more questions...? (about ALM)

==

[case.almblm]

 IF(MODUS.EQ.'ALM  ') then
   WRITE(24,2055) s_kvec,t_kvec,z_kvec,n,ne,bname
   write(24,*) jatom,nemin,nemax,' jatom,nemin,nemax'
 endif
..
IF(MODUS.EQ.'ALM  ') then
   WRITE(24,*) mu,'  ATOM'
   DO NUM=NEMIN,NEMAX
  write(24,*) num,WEIGHT(NUM),' NUM, weight'
  INDEX=0
  DO L=0,LMAX2
 DO M=-l,l
INDEX=INDEX+1

write(24,4893)l,m,index,alm(INDEX,NUM),blm(INDEX,NUM),(clm(INDEX,NUM,jlo),jlo=1,3)
 ENDDO
  ENDDO
   ENDDO
ENDIF

(For example,)

  K-POINT:  0.00  0.00  0.00   131  15   1
   1   1   8  jatom,nemin,nemax
   1   ATOM
   1  2.0004000E-003  NUM, weight
   0   0   1 -0.20737529E-01  0.E+000.64788407E-01
0.E+000.E+00  0.E+00   -0.98289498E+00
0.E+000.E+00  0.E+00
   1  -1   2  0.61826384E-15  0.13469406E-140.30619678E-14
0.46399003E-140.E+00  0.E+00   -0.22199147E-14
-0.34088473E-140.E+00  0.E+00
   1   0   3  0.E+00  0.45633303E-150.E+00
0.57181360E-150.E+00  0.E+000.E+00
-0.44029052E-150.E+00  0.E+00
   1   1   4  0.61826384E-15 -0.13469406E-140.30619678E-14
-0.46399003E-140.E+00  0.E+00   -0.22199147E-14
0.34088473E-140.E+00  0.E+00
..

==

[case.radwf]

 IF(MODUS.EQ.'ALM  ') then
write(23,4645)jatom,jri(jatom),r0(jatom),dx(jatom),rmt(jatom)
do l=0,lmax2
   write(23,*) l
   if (l.le.lomax) then
  write(23,4646)
(RRAD1(jrj,l),RRAD2(jrj,l),RADE1(jrj,l),RADE2(jrj,l), 
   a1lo(jrj,1,l),b1lo(jrj,1,l),a1lo(jrj,2,l),b1lo(jrj,2,l),

   a1lo(jrj,3,l),b1lo(jrj,3,l),jrj=1,jri(jatom))
   else
  write(23,4647)
(RRAD1(jrj,l),RRAD2(jrj,l),RADE1(jrj,l),RADE2(jrj,l), 
jrj=1,jri(jatom))
   endif
enddo
 endif

(For example,)

   1 781   0.50   0.0136781479   2.15
   0
0.9481208536E-03   -0.1049741009E-01   -0.3729211603E-04
0.4128910716E-030.00E+000.00E+00
0.1206062999E-02   -0.1335329547E-010.00E+000.00E+00
0.9610079736E-03   -0.1064009378E-01   -0.3779900075E-04
0.4185032008E-030.00E+000.00E+00
0.1222456140E-02   -0.1353479714E-010.00E+000.00E+00
0.9740702589E-03   -0.1078471687E-01   -0.3831277519E-04
0.4241916117E-030.00E+000.00E+00
0.1239072100E-02   -0.1371876583E-010.00E+000.00E+00
..

==

Q1) The meanings of NUM and weight (in case.almblm)
ex) For Tic, the value of N varies from 1 to 8. (NEMIN=1, NEMAX=8)
Could you explain about their meanings...?

Q2) How to use the values of u and u_dot (in case.radwf)
It has 781 lines for each l value.
Could you suggest any good way to treat them and do multiplication?
(or recommend a readable source file related with this calculation?)
(There were similar message, but not answered ...
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2008-March/010619.html)

With best regards

Kyohn
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[Wien] [SPAM?] Some questions about wavefunctions

2012-09-06 Thread Kyohn Ahn
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[Wien] Some questions about wavefunctions

2012-09-06 Thread Kyohn Ahn
Dear WIEN2k users,

Can I ask you some questions about wavefunctions?
I hope to calculate some properties using the informations of wavefunctions.
If I could understand the format of wavefunctions,
I will be able to make a simple program to calculate some properties I want.

There were good messages about this issue,
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2010-July/013407.html
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2009-October/012079.html
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2009-February/012197.html
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2006-August/007606.html
http://zeus.theochem.tuwien.ac.at/pipermail/wien/2005-August/005665.html
and I read userguide, introduction(by S. Cottenier), and Singh's book.

However I don't understanding some ideas still.
So... could you help me?



(1) In case of using WFPRI in case.in1

Here are the informations about the wavefunctions of TiC in case.output1.



   RECIPROCAL LATTICE VECTORS

1.ENERGY   2.ENERGY   3.ENERGY   4.ENERGY   5.ENERGY
6.ENERGY   7.ENERGY   8.ENERGY   9.ENERGY
   0   0   0
   0.397668   0.00   0.00   0.00   0.874538
0.00   0.00   0.00   0.00   REALPART
  -1  -1  -1
   0.160571  -0.213744   0.063162   0.076688  -0.173605
0.164494   0.365820   0.065700  -0.251862   REALPART
   1  -1  -1
   0.160571   0.010807   0.216013   0.093693  -0.173605
0.207857  -0.281200   0.207174  -0.066659   REALPART
  -1   1  -1
   0.160571  -0.073154  -0.153052   0.163648  -0.173605
0.014673  -0.085825  -0.397011   0.157074   REALPART
  -1  -1   1
   0.160571  -0.151398   0.000200  -0.180654  -0.173605
-0.387024   0.001205   0.124138  -0.342276   REALPART
   1   1  -1
   0.160571   0.151398  -0.000200   0.180654  -0.173605
-0.387024   0.001205   0.124138   0.342276   REALPART
   1  -1   1
   0.160571   0.073154   0.153052  -0.163648  -0.173605
0.014673  -0.085825  -0.397011  -0.157074   REALPART
  -1   1   1
   0.160571  -0.010807  -0.216013  -0.093693  -0.173605
0.207857  -0.281200   0.207174   0.066659   REALPART
   1   1   1
   0.160571   0.213744  -0.063162  -0.076688  -0.173605
0.164494   0.365820   0.065700   0.251862   REALPART
   0   0  -2
   0.121667  -0.042756   0.043178   0.176478   0.023874
0.00   0.00   0.00  -0.065440   REALPART
...

   RECIPROCAL LATTICE VECTORS

   10.ENERGY  11.ENERGY  12.ENERGY  13.ENERGY  14.ENERGY
15.ENERGY
   0   0   0
   0.00   0.00   0.00   0.00  -0.302844
0.00
  -1  -1  -1
   0.094600   0.291365   0.00   0.00  -0.220060
-0.351710
   1  -1  -1
  -0.319063   0.225903   0.00   0.00  -0.220060
0.351710
...



Q1) The meaning of K-vectors (for example, 0 0 0 or -1 -1 -1 or -1 1 -1
...)
Do they mean the direction(or axis) of the plane waves?

Q2) The meaning of REALPART
What is the reason to write ENERGY1~9(marked REALPART) and ENERGY10~15
separately?

Q3) The meaning of #.ENERGYs
I think they are the corresponding (linear-combination) 'coefficients'.
Then, what is the shape of the basis?
(Is there any recommendable book or paper to find the informations about
this basis set?)



(2) In case of switching ALM in case.in2

It prints the expansion coefficient Alm, Blm, ...

Q4) The authenticity of Alm, Blm, ...
For example, according to the equation (2.4) in UG,
[wavefunction inside atomic sphere] = SUMlm [ ( Alm * ul + Blm * ul_dot ) *
Ylm ]
Then, how can I get the informations about ul and ul_dot?
(Or, the calculated Alm, Blm, ... values are containing ul and ul_dot?)



Thank you for reading this mail.
Any response will be very helpful for me.
(If I have some misunderstanding, please point out my mistakes!)

With best regards

Kyohn
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