Dear wien2k user,<br>
I want to reproduce DOS of FeCr2S4 which is
published <span style="font-weight: bold;">Phys. Rev. B 59, 10018 - 10024 (1999)</span><br style="font-weight: bold;">
<span style="font-weight: bold;">[Issue 15 – April 1999] </span> <a href="http://prola.aps.org/abstract/PRB/v59/i15/p10018_1">http://prola.aps.org/abstract/PRB/v59/i15/p10018_1</a> <br>
The LSDA calculation
yeilds the ferrimagnetic half metallic states for FeCr2S4 which I get
both for LMTO and LAPW calculation.<br>
Using LSDA+U I get insulator for LMTO method but LAPW method it
remain half metal .I also used gga+u . I tried with different U
and J parameter for LAPW method.<br>
<br>
The necessary files which i used for LAPW calculation are <br>
<br>
FeCr2S4.struct<br>
F LATTICE,NONEQUIV.ATOMS: 3227_Fd-3m<br>
MODE OF CALC=RELA unit=ang<br>
18.876732 18.876732 18.876732 90.000000 90.000000 90.000000<br>
ATOM 1: X=0.37500000 Y=0.37500000 Z=0.37500000<br>
MULT= 2 ISPLIT= 2<br>
1: X=0.62500000 Y=0.62500000 Z=0.62500000<br>
Fe NPT= 781
R0=0.00010000 RMT= 2.3000 Z: 26.0<br>
LOCAL ROT MATRIX: 1.0000000 0.0000000 0.0000000<br>
0.0000000 1.0000000 0.0000000<br>
0.0000000 0.0000000 1.0000000<br>
ATOM -2: X=0.00000000 Y=0.00000000 Z=0.00000000<br>
MULT= 4 ISPLIT= 4<br>
-2: X=0.00000000 Y=0.25000000 Z=0.25000000<br>
-2: X=0.25000000 Y=0.25000000 Z=0.00000000<br>
-2: X=0.25000000 Y=0.00000000 Z=0.25000000<br>
Cr NPT= 781
R0=0.00010000 RMT= 2.3000 Z: 24.0<br>
LOCAL ROT MATRIX: 0.4082483-0.7071068 0.5773503<br>
0.4082483 0.7071068 0.5773503<br>
-0.8164966 0.0000000 0.5773503<br>
ATOM -3: X=0.75900000 Y=0.75900000 Z=0.75900000<br>
MULT= 8 ISPLIT= 4<br>
-3: X=0.24100000 Y=0.24100000 Z=0.24100000<br>
-3: X=0.24100000 Y=0.00900000 Z=0.00900000<br>
-3: X=0.75900000 Y=0.49100000 Z=0.49100000<br>
-3: X=0.49100000 Y=0.49100000 Z=0.75900000<br>
-3: X=0.00900000 Y=0.00900000 Z=0.24100000<br>
-3: X=0.00900000 Y=0.24100000 Z=0.00900000<br>
-3: X=0.49100000 Y=0.75900000 Z=0.49100000<br>
S NPT=
781 R0=0.00010000 RMT= 1.8000 Z:
16.0<br>
LOCAL ROT MATRIX: 0.4082483-0.7071068 0.5773503<br>
0.4082483 0.7071068 0.5773503<br>
-0.8164966 0.0000000 0.5773503<br>
48 NUMBER OF SYMMETRY OPERATIONS<br>
-1 0 0 0.00000000<br>
0-1 0 0.00000000<br>
0 0-1 0.00000000<br>
<br>
FeCr2S4.inorb<br>
1 2
0
nmod, natorb, ipr<br>
PRATT
0.3
BROYD/PRATT, mixing<br>
1 1
2
iatom nlorb, lorb<br>
2 1
2
iatom nlorb, lorb<br>
1
nsic 0..AFM, 1..SIC, 2..HFM<br>
0.2205 0.0588 U J
(Ry) Note: we recommend to use U_eff = U-J and J=0<br>
0.1470 0.0588 U J<br>
<br>
FeCr2S4.indm<br>
-9.
Emin cutoff energy<br>
2
number of atoms for which density matrix is calculated<br>
1 1 2 index of 1st atom, number of L's, L1<br>
2 1 2 dtto for 2nd atom, repeat NATOM times<br>
0 0 r-index, (l,s)index<br>
<br>
LAPW magnetic moment which I get which is quite ok but To make it as a insulator I am not able to find out . <br>
MAGNETIC MOMENTS OF MIXED CHARGE DENSITY<br>
:MMINT: MAGNETIC MOMENT IN INTERSTITIAL = 0.25471<br>
:MMI001: MAGNETIC MOMENT IN SPHERE 1 = -3.29972<br>
:MMI002: MAGNETIC MOMENT IN SPHERE 2 = 2.72983<br>
:MMI003: MAGNETIC MOMENT IN SPHERE 3 = -0.07183<br>
:MMTOT: TOTAL MAGNETIC MOMENT IN CELL = 3.99994<br>
<br>
I used U and J parameter for this calculation<br>
<br>
Cr U 3 5
7 10 J 1
1 1 1<br>
Fe U 2 4
6 9 J
1 1 1 1<br>
Also I used U_effective <br>
Is it possible to get insulator using LAPW calculation. Is there any silly mistake .<br>
Any kind of help is highly appreciated. If any farther information is requierd you can mail me . <br>
<br>
Swarup.<br>
<br>
<br>
<br>